Rick van den Bosch - Blog

I like the new look, but some comments I post two day ago are gone now.

Nice article, based on the news this week!
Way to go!

Yep you are completely right, that's why I think unit testing is over appreceated....

I know setting a bitmap in the copy buffer and trying to paste it into every entry field (at least try to) I could find in the application was producing a steady flow of bug reports.

Hell, I was about 100 bugs further and only then I started with reading the functional design and started testing functionally...

Those bugs could have never been found with unit testing.

And my first objective in testing is always to show where the programmer failed. So I don't try to make it work, I try to break it first, if the program survives the 'Monkey test' you can see if you can break it on a functional level.....

A couple of months ago I found an article about MS testing on whidbey... I belive they had about 500.000 Test cases and about 20.000 people testing them......

Dino Esposito wrote an extensive article on this topic (DataSets vs Collection)in the August issue of the MSDN magazine.

http://msdn.microsoft.com/msdnmag/issues/05/08/CuttingEdge/default.aspx

Actually the answer is simple... need an in-memory database? Then use the DataSet.

[quote]
So that's virtually never? ;)
[/quote]

See, you're not that dumb! ;)

The article was really good, I agree. But in the end, you need to decide what is best for the problem you're trying to solve. The article gives you the information to make that decision.

When a DataSet is good enough to do the job, why not use that? I've actually seen solutions where people moved data from a DataSet to an object, only to move it back into a DataSet...

Try sending a object to Crystal Reports or any other report writer. DataSet's are way easier for that purpose.

DataSet's are very handy, but they are nog save. I prefere Custom Entry Class because this is more OO and gets your code cleaner imho. You don't get code like:

int userId = Convert.ToInt32(ds.Tables[0].Rows[0]("UserId"));

But

int userID = user.ID;

That is more clearly for me. These two links below are interesting:

http://jelle.druyts.net/PermaLink.aspx?guid=61676665-06a7-443a-9462-71dae713539e

http://msdn.microsoft.com/asp.net/default.aspx?pull=/library/en-us/dnaspp/html/CustEntCls.asp

uhhhhhh,

I don't know i always have a class with a dataset in it.....

So i NEVER do
int userId = Convert.ToInt32(ds.Tables[0].Rows[0]("UserId"));

But alwayd do :

int userID = user.ID;

So is that good or bad....

Up 'til now I've used DataSets most of the time because they come with standard functionality for keeping changes and structure. But if you are going Service Oriented with your code, and you want to be interoperable (i.e. callable from non-.NET environments) you just cannot use these .NET specific types in your methods. So there home-brew classes or simple types are the way to go...think about that all the time when you're building code. 'Coz you never know who's going to use your stuff tomorrow.

It just takes getting used to. I use this operator when it's clear what you're doing.

And it's a matter of taste. I would never write the 'complete' code your way. I would write it this way:

if (myArrayList == null)
{
return 0;
}
return myArrayList.Count;

The else is not necessary in this scenario.

This is why I think coding standards should never include rules about this sort of thing. Too much discussion, with very little value :-)

I really do not have a preference either way, I use it myself on occasion there are just some spots it just seems appropriate to me. If I am doing anything extremely complex with a lot of math then I do break it into an if statement.

I agree with Jan on the coding style. This style becomes more important if you have multiple if statements that follow each other.

I prefer to limit the amount of nesting of code inside else statements. So I avoid the else block when the code in the if block returns and the else is not required.

Of course this requires that you are not of the religion that only one return statement is allowed per method ;)

Well it is a EAP version... or let us say Beta :).

So.. don't use it on production systems and only on test pc's. For example a virtual machine to see what ReSharper 2 has to offer.

Hi so could someone post teh correct completed code pls.

For me unable to delete the temporary folder was related to indexing service being enabled. I just added to exclude the temp folder from the index service and it corrected my problems.

Still haven't tried it, shame on me!

But I will give it a change when it looses hit BETA status, because I read a lot of negative stories.

Cheers mate, that was a real bugger

Enjoy your Holiday and to get burned by the sun :)

"This means not the entire object is sent over the line, but only the interface"

NO! An object ref is passed around. You create a proxy on the client.

Grab a copy of Ingo Rammer, Advanced .NET Remoting and check page 42. A server activated object IProductFactory returns new client activated IProduct objects. As stated in the thread on tweakers.net your IProduct instances are then stored on the server. I'm not exactly sure what your requirements are, but if you are trying to run objects on the client without sharing the implementation between the server and clients... think hard what you're trying to accomplish. This isn’t advanced remoting ;)

Sounds complicated. Neo? Neo maps domain objects (or business object for that matter) to a dataset, so your client uses a dataset as a container for in-memory storage and XML to store your object graph on disk. Then send the dataset to the server and order Neo to persist the dataset to your database.

Neo is a disconnected Object-Relational Mapper. You could decide to share the domain model between the client and the server or let the client have its own domain model, that's up to you.

Are you developing a smart client application?

I saw a presentation monday to explain the basics of .Net to some starting developers....

We put a collection class and the corresponding item class (e.g. Widgets and Widget) in the same file, which seems to work fine. More than this tends to make navigation difficult. The workspace feels cluttered.

I totally agree with the guide lines. But we put EventArg classes and the delegates by the corresponding class.

We don't put the collection classes with the corresponding classes but I can understand why Horwill does it.

But you need to follow guidelines imho, so do it or don't do it as long as you follow guidelines it is clear for everybody.

If the class is only used in one project in your entire solution, then I don't see a problem in moving it to that project. But when you use it several projects, then having a common project is the way to go. At least, that's my opinion.

Then I think you made the right decision to put it in a separate common project.

As you said Rick: "And besides, other classes will probably follow soon".
Now it is one tiny class that got a whole project for his own (lucky him), but soon the project will grow.
It is good you seperated it because you must follow the guide lines.

Have a look at Brad Adams post on singletons, locking and volatile (http://blogs.msdn.com/brada/archive/2004/05/12/130935.aspx)

this starts with 'the best practice' on this subject (double check locking pattern) and he factores the volatile keyword out. Whether that is necessery, I leave up to others.

but I think 'double checking' around your lock it worth your while. This way you won't lock while accessing an created instance of your static instance.

Why not doing it this way:

public sealed class Singleton
{
static readonly Singleton instance=new Singleton();

static Singleton()
{
}

Singleton()
{
}

public static Singleton Instance
{
get
{
return instance;
}
}
}

I doubt if the last sample provide thread safe access. The il will at least submit 3 statements, a call to .ctor, a pop and a ld. After the call to the .ctor a context switch might take place. That will allow the second thread to call into the Instance property again.

You must provide the STATIC Ctor, otherwise the compiler will mark it as beforefieldinit.

It really worked. I saved lot of my time.

This is a way... but what if I would to sort this time on username and later on on date of birth?

You can add a sort delegate that does the object comparison for those kind of scenarios.

Can you save your newly created animated gif to a file? If so how?

If you would like to (for example) make sure all the jpegs on your site are displayed including...

Gefeliciteerd!

Heb je 58.24 vragen goed gegokt? ;)

Tijd voor een Hertog Jan...

Agreed. I think too much code is being hidden or taken away.

If anyone knows of any papers on migrating to it from VS2003 it would be very interesting reading - and would lead to my faster adoption.

If you mean all the protected members for every control on your page, including the OnLoad methods and such...

Remember the partial classes?! :)
There's an initialize method called in your webpage's constructor. Press F12 on it (Go To Definition) and you'll see where they are.

Hi Rick,
Congratulations on passing the RUP certification test.
I am looking at taking the IBM test 639 for RUP.
I would really appreciate any pointers from you in that matter.
91% is a very hogh score.
Good job man.
Write to me if you please at amit_d001@yahoo.com.
Amit

Hi Rick,

Is it possible to do the same with png images?

Cold you e-mail me, please?

My e-mail is: gorant@dundas.com


Thank you in advance.

Goran Tesic

I migth use this concept in a potential next version of an application I believe you know (it starts with a R and ends with ...IAD).

Congratulations on getting such a high percentage in RUP. Can you please share sample test paper or any other relevant material with me?

Please write to me at deb2who@yahoo.com

Thanks in Advance!
Deb

I use the CSLA .NET Framework, which does a similar thing.

If an error occurs, it is caught and wrapped up nicely inside another exception.

We have had your problem, whereby it claimed the BinaryFormat was invalid - which it is - because the exception thrown results in HTML, rather than the format it was expecting. Do a packet sniff on it and it will tell you what error this was - but I do not know of any way to solve this.

We have since dropped this in favour of Web Services - for the sake of transparency and speed.

As a follow-up to my previous post..
Eventually a colleague of mine pointed me in the right...

I've already expressed my distaste for all these supposed "accessibility friendly" controls that have been introduced. It does increase reliance on stock controls and less on the abilities of the programmer - resulting in a degree of false faith.

My approach: do it yourself, but use the XHTML output of ASP.NET 2.0 to ensure a strong control.

Rick, check out this blog post: http://idunno.org/displayBlog.aspx/2005080101. The root cause is that the ASP.NET 2.0 browser sniffing (in the default configuration) doesn't recognize the W3C Validator. It is then treated as a down-level browser. The post links to a w3cvalidator.browser file that you can use to remedy this.

Hi Rick

Congrats on passing the RUP Exam. Can you please tell me relevent materials that you used for passing the exam

If you plan to sell your study material do let me know. I am willing to buy

Please do send me a mail
Regards

gautamsinha@hotmail.com

This is not so handy when you host at e.g. a host like Brinkster where there is no access to the webserver so on my site there i just put a way long case statement handling everything in the global.asa

I have tried this code in vb.net but when I click the export button all I get back is the .aspx page. The pdf does not show. Any help would be appreciated.

see code below.

Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.Shared
Imports System.IO

Public Class frmNonGMPReport
Inherits System.Web.UI.Page
Dim crpt As NonGMPServiceProvider
Dim myTable As CrystalDecisions.CrystalReports.Engine.Table
Protected WithEvents exportPDF As System.Web.UI.WebControls.Button
Protected WithEvents CrystalReportViewer1 As CrystalDecisions.Web.CrystalReportViewer
Dim myLogon As CrystalDecisions.Shared.TableLogOnInfo

#Region " Web Form Designer Generated Code "

'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

End Sub

'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()

End Sub

#End Region

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here

Dim crpt = New NonGMPServiceProvider

For Each myTable In crpt.Database.Tables
myLogon = myTable.LogOnInfo
myLogon.ConnectionInfo.Password = "gmplist"
myLogon.ConnectionInfo.UserID = "gmplist"
myTable.ApplyLogOnInfo(myLogon)
Next

CrystalReportViewer1.ReportSource = crpt
CrystalReportViewer1.Visible = True

End Sub
Sub ExportReport()
Dim oStream As MemoryStream

oStream = crpt.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat)
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/pdf"
Response.BinaryWrite(oStream.ToArray())
Response.End()

End Sub
Private Sub exportPDF_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
ExportReport()

End Sub

End Class

Jaisus. Thanks. I was starting to get skitz out about that one; started down the path of edits to the machine.config not really knowing what i was looking for. Whacked. Jaisus.

Hi Rick

Congrats on passing the RUP Exam. I got your email address from http://bloggingabout.net/blogs/rick/archive/2005/10/28/10031.aspx#comments. With a passing score of 91 percent that's excellent

I have trying had to get some info on how to pass the RUP (639) exam and so far have been very unsuccesful. Can you please tell me relevent materials that you used for passing the exam. Books that i need to buy

If you plan to sell your study material do let me know. I am willing to buy

Please help me and do send me a mail when you get a chance


Regards


Gautam Sinha PMP

How are you connected?

Scart or s-video?

In the tv options you can force a certain connection.

I had problems that seem to be similar. When I fixed the tv out to s-video my problems were gone.

You could try MediaPortal. A dotNET Project that may prove whether it is WIn XP MCE or your hardware. Works on most platforms.

http://www.team-mediaportal.com/

Just out of interest, where did you buy a copy from? I thought it was only OEM?

Hmmm I have an nvidia board too.

Do you have a panel where you can adjust the flicker fixer etc.?

I can get there from the desktop. Rightclick on the desktop, select nvidia, select TV.

The new dialog shows the options for tv out related stuff including forcing an output and adjusting the flicker fixer.

It can also be a directx related issue.

Try fixing the refresh rate for directx fullscreen applications.

Download the directx control panel somewhere (also part of the sdk). You can somewhere adjust the refresh rate to a fixed value.

Rick, any chance you can post the code or a hint as to how you are downloading the config file to the local file system?

My last attempt at using WebClient.OpenRead failed.

Thanks in advance,

Kahn

Congrats!
91% is a great score!
I'm trying to study for this test too.
Please give me some advice to have a good preparation.
katia.canepa@gmail.com

It's an excellent book. A bit too much on the oo-patterns I think. I would've liked to see more Agile practices in the way Uncle Bob writes. I loved reading this book.

I've bought this book as well (see <a href="http://fgheysels.blogspot.com/2006/01/buying-books.html">here</a>, and I'm expecting a lot from it.
I've already read a few pages, but, 'till now I haven't learned any new things... (I've only read 30 pages yet. :) ).

ps: it's been a while since I've seen you on t.net ?

I've bought this book as well (see <a href="http://fgheysels.blogspot.com/2006/01/buying-books.html">here</a>, and I'm expecting a lot from it.
I've already read a few pages, but, 'till now I haven't learned any new things... (I've only read 30 pages yet. :) ).

ps: it's been a while since I've seen you on t.net ?

Great Rick..!
a score of 91 is really great...
i'm preparing for RUP exam...
Pl give me some pointers...

Chakradhar_careermail@yahoo.co.in

Regards,
Chakradhar

But what if I am using an interface (for example ILease) and i can't add a static keyword?

Thanks for your explanation on Delegates, I was trying to find a down-to-earth explanation of just what the heck did they do and how the work, and I think your intro helped me grasp the main idea behind them.

Yes, I hit this little gem last week. I'm about to launch a Buddhist resource site whereby you can buy and download content. The client wants to integrate with PayPal. If you recall my post about "What is the point" I blogged (sorry, ranted) about the alternative Postback "feature", which is absoltuely pointless in that it does not send the form variables to the other page - in this case PayPal.

So I had to use their PayPal component, which worked REALLY well. I was getting more than a little nervous it was coming up to launch date, so was a big relief. Come to push it up, and I get exactly what you get.

The AllowPartiallyTrustedCallersAttribute is all very good - if you have access to the original source code - which I didn't. So .NET is STILL relagated to calling the PayPal API using the GET method - which I don't like because it is a little too "visible". I hate it when PHP people can do something I can't.

If the assembly with PayPal's API (which I assume exists from Nathan's comment) does not have the AllowPartiallyTrustedCallersAttribute then either
- PayPal was ignorant to the fact that it is important to flag their assembly to allow use in partial trust scenarios.
- PayPal decided its assembly was not inherently safe to be called by callers who are not fully trusted.

Either way, Microsoft is not to blame for this. AllowPartiallyTrustedCallersAttribute is a very important security measure by Microsoft and an important thing to consider if you design assemblies for reuse. So ask PayPal for a better library ;)

Do make sure your assembly is indeed safe to be called by partially trusted callers before you apply that attribute to your own code (like the post by Shawn Farkas referenced by Rick states).

Hi,
nice code here :)
About the poor quality, I tried to use a quantizer (ImageManipulation.OctreeQuantizer) on each image. There's a better quality but the palette doesn't work very well. The problem with the quality is here, the palette. But I didn't resolve it (yet)
About a little optimisation, you can remove the latest "if", and binaryWriter.Write(";"); outside the "for", it does the same :)

I think this is a good idea. Atleast to see how everybody is related to each other.

Most people are from LogicaCMG but not all.

Maybe just a nice bbq will do :)

Great idea!
I like the suggestion of a BBQ too btw. Maybe as a KickOff?

Good idea! I'm in, it would indeed be great to have get together.

Brilliant idea. Count me in!

I'd be interested in such a meeting as well. Dennis, maybe we can discuss upgrading BloggingAbout.NET to Community Server 2.0? ;)

Erwyn, we can discuss who's doing what.

The functionality we currently have to upload files and images doesn't work yet. Someone was rewriting the FreeTextBox wrapper for CS but I don't hear from him anymore. Kind of strange.

If you feel like picking it up, be my quest. I really can't find the time right now.

fun initialive, count me in

He, why only BlogginAbount.NET people! It should be a meeting for everyone who is reading you blog ;)

Hi,

I am interested in attaining RUP certification. Any help would be greatly appreciated. I am specifivcally looking for material and sample questionaire.

Regards

ridhakefi@hotmail.com

Great! Sign me up, please!!

I've received lot's of positive reactions on the post about organizing a bloggingabout.net meeting. I'll&amp;nbsp;...

This problem (but then in a DataReader context) prompted me to write a value type conversion class that does do the trick:

public static class Cast
{
public static T To<T>(object value)
{
return To(value, default(T));
}

public static T To<T>(object value, T defaultValue)
{
if (value == null || value is DBNull) return defaultValue;
Type type = typeof(T);
if (!type.IsValueType) return (T) value;

Type underlyingType = Nullable.GetUnderlyingType(type);
Type valueType = underlyingType != null ? underlyingType : type;
return (T) Convert.ChangeType(value, valueType);
}
}

Where (int) (object) (long) 1 fails Cast.To<int>((object) (long) 1) will work.

You forgot to mention that there are very expensive operations. Normally stack information is only needed then exceptions are thrown.

There is also an Article on Codeproject ( http://www.codeproject.com/dotnet/NGif.asp ) explaining how to open/save gif animations

Non-static methods should work, I do this all the time. However, you must be sure you're passing in the correct object reference.

I encountered this error when I was trying to call a method on a property value and invoked the method with the object containing the property rather than the value of the property itself.

I have planned a exam for next week. Now i can do a test first and take a look if there are some points that need studing.
I haven't prepared yet, because there are no trancenders available yet. So i just go and pray ;)

It is an expensive operation, that is why exceptions are a so expensive to throw. Not the throwing is expensive, but the creation of it.

But, i use this sometimes for debugging purpuse and method uses. If a plug-in for my application hits my DB very hard, i can know how many times he uses methods. It is very expensive, but sometimes very very usefull!

One problem with makeing the BaseForm internal is the no internal class that is marked as public can inhire from the BaseForm. Please, remember that.

Cleartype should only be used on tft screens and not on normal monitors. On normal monitors you should only use normal anti-aliasing.

I use consolas on size 8 with a very thin cleartype setting and it really is a great font is the editor supports cleartype fonts like visual studio.

What's important for me is, can people handle Consolas after looking for 8 hours to a beamer projection screen!? :)

Currently I'm using Lucinda Console because that's the best projection font available. I tested Consolas personally on a projection screen, and it looked nice, but haven't tested it with an audience yet. Gotta try it soon.

If you are going to use consolas on a beamer then you have the same quality degration as a monitor. The display settings should be anti-aliased and not cleartype with a beamer.

Courier, Lucida Console and Consolas aren't the only options in the world and you shouldn't just use those because MS provided them.

http://keithdevens.com/wiki/ProgrammerFonts has a summary of many fonts suitable for programming.

If you like ClearType then also check out Bitstream Vera Sans, Monaco, Andale Mono and Anonymous.

If you prefer your fonts pixel-sharp try Envy Code A/B (mine), Profont, Dina, MonteCarlo or SGIScreen - http://steveblock.com/r/sgiscreen.zip.

[)amien

On the C# Connectionlist voor MVP's and some other invited people there is a great discussion going on that goes much deeper.

Meybe I can post it public somewhere when it is finished. I will ask for it.

A bit late maybe, but have just solved this same problem with your help (thanks). The resx compiler tries to write to the obj/Release directory for release builds, where it tries to write form1.resources. That should explain why Debug does build, since the obj/Debug directory shortens the path by 2 chars...

Don't listen to this. As I see it, the article states we only use static methods?!? (if not, forgive me for overlooking). To clarify, as Thuktun stated above. You need to have a proper object reference when calling Invoke() if you plan on calling non-static methods, here's an example:

// _myGlobalType is a global of type object

Type type = _myGlobalType;

System.Reflection.MethodInfo methodInfo =
  type.GetMethod("MyMethodNameToFind");

// Note we provide the correct object reference
methodInfo.Invoke(_myGlobalType,
  new object[] { (int)0 } );

i have pass the exam with 91% result i hope i can help, just send me at osikax@yahoo.com

Good score man.... please give us some hints about taking this exam, how do you prepare it?

PingBack from http://born2code.net/?p=30

I have excactly the same problem! But I tried to make all static ist doesnt work.

class RBMain
{

private static object oE = null;
private static object oW = null;
private static System.Type eType = null;
private static object[] inputA = {
UtilClass.GetAppPath() + "report14.xlt", // filename
System.Reflection.Missing.Value, // UpdateLinks
System.Reflection.Missing.Value, // ReadOnly
System.Reflection.Missing.Value, // Format
System.Reflection.Missing.Value, // Password
System.Reflection.Missing.Value, // WriteResPassword
System.Reflection.Missing.Value, // IgnoreReadOnlyRecommended
System.Reflection.Missing.Value, // Origin
System.Reflection.Missing.Value, // Delimiter
System.Reflection.Missing.Value, // Editable
System.Reflection.Missing.Value, // Notify
System.Reflection.Missing.Value, // Converter
// System.Reflection.Missing.Value, // AddToMru
// System.Reflection.Missing.Value, // Local
System.Reflection.Missing.Value // CorruptLoad
};

...


[System.STAThreadAttribute()]
public static void Main(string[] args)
{
System.Globalization.CultureInfo oldCI = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

eType = System.Type.GetTypeFromProgID("Excel.Application"); //Get the excel object
oE = System.Activator.CreateInstance(eType); //Create instance of excel
oW = (object) eType.InvokeMember("Workbooks", System.Reflection.BindingFlags.GetProperty, null, oE, null);
/*error here*/ eType.InvokeMember ("Open", System.Reflection.BindingFlags.InvokeMethod, null, oW, inputA);
System.Threading.Thread.CurrentThread.CurrentCulture = oldCI;

...

Enjoy the vacation Rick, but with 100 kids around it doesn't sound like a relax vacation ;)

I'm looking forward to the pics of your new home!

About the quick change from this:

binaryWriter.Write(buf1, 789, buf1.Length - 790); //Image data

to

binaryWriter.Write(buf1, 781, buf1.Length - 782); //Image data

The former works if you are making animated GIFs from pre-existing saved images.  

The latter works if you are making an animated from images you create on the fly with a Graphics class.  In other words, if you're doing something like this:

Image frameInGIF = new Bitmap(20, 20);

Graphics bnrGraphics =
            Graphics.FromImage(frameInGIF);

bnrGraphics.FillEllipse(
            new SolidBrush(Color.Blue), 0, 0,  20, 20);

Though the "781 case" seems to create a working animated GIF in any case, the delay between frames is set to 0 when you create an image with a Graphics class.

Hi,

Does anyone know how to specify the delay time in milliseconds between frames. I am having trouble using:

buf3[4] = 10;  //Delay time low byte
buf3[5] = 3;   //Delay time high byte

How does that work?

Thanks.

I had the same problem and yes making the method to be invoked as Static/Shared did work. But the real problem is this ....

methodInfo.Invoke(_type, New Object() {_paramArray})

methodInfo.Invoke(Activator.CreateInstance(_type), New Object() {_paramArray})

In the first case ... as i was doing before, i just supplied the "_type" which was a Type object. There was no instance to execute the method on. However, the error "Object does not match target type" dosen't clearly indicate this. So changing the method as Static worked as static methods are on a type and not on an instance of the type.

In the second case ... Activator.CreateInstance(_type) created a real instance of the type. Now both Static and instance methods were available at runtime.

Hope this is helpful

"Does anyone know how to specify the delay time in milliseconds between frames"
I wanna know also...
And anyone know how to set the number of times that the animation will be repeated??

Sorry for my bad english ( I'm Brazillian) :D

Thanks.

Hi, I am interested in attaining RUP certification. Any help would be greatly appreciated. Regards masrajeshkumar@gmail.com

Thanks, I needed a way to get the byte[] md5 hash of a string password...worked great

Very nice blog. I read it every day.

Your site is realy very interesting.

We're working on it mate, we're working on it...

Welcome back! :)

Hi Rick, I am preparing for RUP Cert. Can you tell me what are the books that you referred? Thx, VJ

Hi Rick, I forgot to leave my email id. catchvijai@gmail.com Thx, VJ

Hi Rick, Congratulations for passing the RUP Exam. I plan to take the exam soon. It would be a great help if you could share your expirence and what one should be reading for the exam. Also any training material that you would like to share would be a very useful. Thanks in advance. My email Id is dskumbhar@yahoo.com

The inaccuracy depends on the value of the double. It also depends on how the calculation statement is written.

Make sure that you aren't by any accident casting the values.

Maybe you've done graphics programming in the old days and then you perhaps found out that if would be better to always calculate positions from fixed coordinates instead of continuously updating an already calculated value in 3d space.

For example:

   const double step = 0.1d;

   double currentA;

   double currentB;

   currentA = currentB = 0d;

   for (int i = 1; i < 100; i++)

   {

        currentA += step;

        currentB = i*step;

   }

A and B will contain different values most of the time. Method B is preferred if available to maximize accuracy in a whole.

About the VB6 DLL's: The guy came to me yesterday with that question. We discovered that the TLB libraries he was referencing in his VB6 project where not available in the directory where he did the manual or visual studio conversion, which resulted in all kinds of strange errors. After we put the TLB thingies there it worked like a charm. I hope his weird set_method problems dissapear now too. Normally you should only see this in MSIL code. Regards, -- Rob.

Always good to check the VMTN Forums. A search there http://www.vmware.com/community/search.jspa?objID=f19&q=host+name yields that the best way is probably a script on the host that changes the .vmx file before the VM is started, perhaps as part of the install.

Please help me, I did it all you adviced. I still have the same problem. Thak you all for your help.

Almost all values that can easily be represented using decimals (like 0.1, 0.2, 0.3, 0.15, etc.) cannot be represented exactly in binary notation with a finite number of digits. For computers the binary representation is the most efficient, so doubles are stored in binary representation.

For example, decimal fractions that can be represented accurately in binary notation are:

1 = 1/1 = (1)

0.5 = 1/2 = (0.1)

0.25 = 1/4 = (0.01)

0.125 = 1/8 = (0.001)

0.0625 = 1/16 = (0.0001)

0.03125 = 1/32 = (0.0001)

so

0.75 = 1/2 + 1/4 = (0.11)

An example of what you call "difficult fractional values" is

0.1 = 1/10 = 1/16 + 1/32 + 1/256 + 1/512 + 1/4096 + 1/8192 + ... = (0.000110011001100....)

If doubles were represented ternary, other numbers could be stored exactly:

0.33..... = 1/3 = [0.1]

0.66..... = 2/3 = [0.2]

And a difficult one is

0.5 = 1/2 =  1/3 + 1/9 + 1/27 + 1/81 + ... = [0.111...]

I've used

x for decimal notation

(x) for binary notation

[x] for ternary notation

Check out http://en.wikipedia.org/wiki/Binary_numeral_system for much more detail.

HI Rick, Congratualtion, its a great achievement, particularly cause i am trying to give the exam and i am not finding it easy. If you could providing me with some advice and share your study notes then it would be of great help id_shirish@yahoo.com Thanks Shirish , PMP

Nice! I'lll use it on my site. -kak http://www.kennedyandkate.com

I really love the Regex search creteria, only now I need the use the Regulator buildup the search string :)

Nice code... got a version for 1.1??? :)

"customer satisfaction will increase, and as far as I know that’s what makes those businesses tick… "

And that's where the problem lies. Because that doesn't make them tick, it's stupid customers that make them tick. People think they're getting the best support available. When nothing goes wrong, they continue to buy the service the company delivers.

When things go wrong, like in your case, hopefully actions will be taken. Most of the time, it isn't. Most of the time, people will continue to purchase the services at the same company.

Now I wonder why that is. Part of the problem is probably because money doesn't really matter to most people. With almost every couple in our country has two working partners, they make so much money, they have no idea what they spend on grocery, for example. One step further and we're looking at a large electronics retailer where people are just dragging the wide-screen HDTV 100" tv's outside like you get them for free with a pack of batteries or something.

People have enough money and are so spoiled, the service that people think they want, isn't really what they want. I'm just not sure what they _ARE_ looking for however. Probably go with the masses.

My last example is iPod. It might look nice, I don't think so. But for a lot of money, you get 2GB of storage. For the same kind of money you get another device that does the same, has color display, can also show photos, can more easily play and transfer different kind of media formats and comes with 40GB of storage space. But STILL people buy that stupid iPod. Why's that? Why is that?

It's worse than that, in the web.config under the tag, it called 'securityTrimmingEnabled'. so two different spellings of this property are floating around in VS 2005

To quote a famous dutch soccer player/coach: "Every downside has it's upside"

LEAP in Redmond is pretty cool. You get to see the home of the future and a futuristic information worker setup at the Microsoft Campus. But you can't tell your friends because you'll be under NDA... "Every upside has its downside" ;-)

As a side note: if you want to return a string without the dashes in them, replace the last statement with : return Regex.Replace(BitConverter.ToString(encodedBytes), "-", "");

You can add proxy settings to WLW in the Tools -> Preferences -> Web Proxy menu

did the trick for me here ;)

ah oke, my mistake then :)

what i understood was that you didn't know where to find the settings :) sorry ;)

R.

Nick

Did you get a solution on this? I am just researching the same topic. thanks

To summarize: To invoke a static method, the object that is passed is ignored - you can pass 'null' methodInfo.Invoke(null, new object[] { _paramArray } ); To invoke an instance method, you must pass an object whose class has that method (either directly, through inheritance, or through interfaces, depending on how you reflected the method). methodInfo.Invoke(myobj, new object[] { _paramArray } ); This is reflected in the MSDN documentation. I suggest that you pass a null reference for invoking static methods, as this is clearer than passing a reference to the Type (as the parameter is ignored when invoking static methods).

Hi folks

I just scored 89% for my RUP certification test and if you need any sample questions, you can email me at vpalex@gmail.com. I respond to emails in less than 24hrs

I did all that was suggested, but still had the problem. Finally looked up the Antivirus log... and lo.... behold... this was the culprit. You need to exclude the Temporary ASP.NET folder from being scanned in the Antivirus. This solved the problem for me.

Present!

I love to the coop-play of Gears of War, trading some some pinata's or just lay back and play some Uno.

Have you played with XNA allready?

Thanks for the info. It put me on the right track to fixing an issue I was having.

Frank

Short personal update. About what I did the last couple of weeks, and whats ahead.

Hi Rick, COngratulations.. even i want to take up RUP certification.. Please give me details about eligibility and how to prepare.. my id is parvez_sims@rediffmail.com

It was great! The time spent at Microsoft Campus was interesting, and once the official part was over we had a great extra couple of days off.

You forgot to mention the rainy day in Vancouver... The day itself might have been fairly uneventful, getting an extra stamp in your passport was worth it. Oh and of course waiting for 1,5 hours at the American border ;)

Cowgirls on Thursday was... well... "interesting" as well :)

Thanks to all the other ppl who made the stay in Bellevue/Seattle/Redmond worthwhile!

Perhaps they decided to lose the "2.0" postfix because it might make people think it's only for .NET 2.0?

@Ruud. It is only for .NET 2.0. That implies it also works with .NET 3.0 ;) Since

.NET 3.0 = .NET 2.0 + WPF + WCF + WF + other stuff.

And ASP.NET vNext (3.0? 3.5?) will be:

ASP.NET vNext = ASP.NET 2.0 + ASP.NET Ajax extensions vNext + other stuff

ASP.NET vNext will be included in .NET "Orcas" 3.5. As well as C# 3.0, VB 9.0, ADO.NET vNext and LINQ.

Confusing version numbers abound!

Indeed good news... and we are developing a nice application using it, just ... too bad it will never go live ;-)

P.s. Nice Blogske.

You lucky *** :P Indeed pretty cool ;)

xxx

We all encounter them in the field: pieces of code that are based on assumptions. There's something fundamentally wrong in assuming when writing code.

I signed up at technorati recently . Technorati uses ping to get the info from blogs. And BloggingAbout.Net

Very handy to know, thanks

We all encountered them in the field somewhere along the way: pieces of code that are based on assumptions. There's something fundamentally wrong in assuming when writing code.

As I posted earlier we had some trouble with upgrading the UIPAB to be used in a ASP.Net 2.0 Web Application Project. Eventually, we solved the problem and life was good. Almost a week ago I received a mail through my blog from someone looking for the

Hey i have the same trouble so if you find out how to work it can you let me know? my email is OMalley291@yahoo.com thanks.

Have you notice any side effects/issues after setting shadowCopyBinAssemblies="false" ?

Same problem for a few days....this most definitely helped.  

Thank you!

Here is some code for you to review. This opens the pdf into a new window.

Dim myReport As New crPrintReq()

Session("myReport") = crPrintReq

Dim myTableLogonInfos = New CrystalDecisions.Shared.TableLogOnInfos()

Dim myTableLogonInfo = New CrystalDecisions.Shared.TableLogOnInfo()

Dim myConnectionInfo = New CrystalDecisions.Shared.ConnectionInfo()

Dim dbLogin As CrystalDecisions.Shared.TableLogOnInfo

CrystalReportViewer1.SelectionFormula = "{Print_Req.Dir_ID}= '" & Session("dir_id") & "' And {Print_Req.Uname} = '" & Session("Uname") & "'"

If Not IsPostBack Then

For Each dbTable In crPrintReq.Database.Tables

dbLogin = dbTable.LogOnInfo

'dbLogin.ConnectionInfo.Password = "'" & passwrd & "'"

'dbLogin.ConnectionInfo.UserID = "'" & login & "'"

dbLogin.ConnectionInfo.Password = "'" & Session("Pword") & "'"

dbLogin.ConnectionInfo.UserID = "'" & Session("Uname") & "'"

dbTable.ApplyLogOnInfo(dbLogin)

Next

End If

Response.Write("<script language='javascript'> {window.open('frmPreq3.aspx','_blank');}</script>")

FRMPREQ3.ASPX...CODE BEHIND

Dim strName As String

strName = Session("uname")

Me.Request.QueryString.Get(strName)

Dim tcParam As String

Dim crReport As crPrintReq

crReport = Session("myreport")

Dim strDir As String = Session("dir_id")

tcParam = Me.Request.QueryString.Get(strName)

crReport.RecordSelectionFormula = "{Print_Req.Dir_ID}= '" & Session("dir_id") & "' And {Print_Req.Uname} = '" & Session("Uname") & "'"

Dim strStream As New System.IO.BinaryReader(crReport.ExportToStream(ExportFormatType.PortableDocFormat))

Response.ClearContent()

Response.ClearHeaders()

Response.ContentType = "application/pdf"

Response.BinaryWrite(strStream.ReadBytes(strStream.BaseStream.Length))

Response.Flush()

Response.Close()

I am willing to take the 639 Exam. Any pointers regarding course material will greatly appreciate your help kumarv2222@yahoo.com. Thanks

It's only required when all other possible member names are taken... all zillion of them :)

In Dutch we would call such a programmer an '@terbak'...

Even developers that understand the concept of adding @ in front of a keyword will be confused. Why on earth would you need to do this? I would kick some serious butt if I knew who was responsible for this!

You can just wait for someone to do this: bool @true = false;

Sick...

Maybe if you are required to have domain classes that represents 1-1 the actual domain AND follow a non convetional naming convetion (properties in lower case)...

class Test {

string @continue{get{}set{}}

}

First finding: the domain class should follow the actual domain: remove the @ in front of continue

Is it CLS Complaint? ;)

I have a problem, the password MD5 in my server OpenLDAP is saved with {MD5}o5c3WBNN50D/iYO5RJxcvw==, but to compare with the password in my aplication ASP.net the string is different, something so : j+ZGDCZGqIQtr/6+ZDxa4w==, somebody would help me in this case ?

It seems that fixed my headache right now, thank you very much :)

kshakes's solution is working. Thank you.

My indexing service was not running but i was having the same problem. After 2 crazy hours, i read kshakes's entry. Disabling the antivirus worked for me.

Hi, your code was very useful. however, i would like to enquire something. Is there any way the code your code for MD5 encrpytion be modified to produce an encrypted ouput of this format?

aTXuyYqHUUudx0Km2bsZKlH4/WM=

WEo/tELTiM0dVGGxgsF+5XmDr6s=

koOQgZFIppxqOVFsmWKiOSMJ3RY=

The password i have in my databse are of this format, and i am trying to find out how to insert new passwords as well as decrpyt passwords of this format.

I thank you in advance for your help. Thank you

HI. the source code u provided for MD5 encrption was very useful. however, i would like to enquire if it was possible to make modifications to your coding such that the ouput encrpyted passwords were of this format.

SZCi/864aZZbnCv6hqp+FV/cUPw=

This is so as i am required to encode passwords as well as decode passwords of this format. Thank you very much in advance.

Hi, your code showed how to encode a string into a hased string. How do i do the reverse? input a hashed string and the original password is outputted?

TO: mousemee

You don't too that. You need a hashed-string to string database. There's LOTS of combinations that generate the same hash.

Hi. is anybody familiar with using membership. crete user web service? I need a web service that adds in new users to database which consists of several tables. Thank you

There are a few minor problems with the code:

As mentioned above, you need to change the offset of the image data if there is a control block before the image.

Also the complete image array memory stream will be iniefficiently large as the gif encoder leaves a lot of null data at the end, more improtantly you need to trim down to before each individual image's end marker 3B, otherwise only the images up to the first frame with an endmarker will be shown.

If andybody's still interested, post a comment, and I can share my code.

I'm not using it however, as the default halftone palette used by the .net gif encoder is just not good enough. Rather than creating an optimized palette for each frame (which is annoyingly tricky and requires GDI bit twiddling), we've just ended up using multiple PNGs and animating them from javascript.

As a LogicaCMG employee (in Sweden) and used to those yellow pictures I really must say that those a f-ing funny!

Looks cool, but Quake 1 (yes, 1) still delivers the best multiplayer experience.

I'm getting old......... ;)

QuakeWorld for the win!!!

Signed,

Compile / One Minute Survivors

Yeah, played QW to death... and in "off-line" mode DM4 with a bunch of colleagues, that was a lot of fun...

Signed,

Bananeman / Groente & Fruit Clan :)

(no, we didn't take things very seriously :)

Please tell me, how decode a password using MD5 in c#/

It is possible to get a collision for the computed hash with brute force possibly optimized to abandon invalid iteration branches. But that is a whole science and I am not a scientist in that field.

Remember MD5 is not considered safe for storing passwords, or security any more. Use some stronger hash instead (SHA). However it is still good enough to hash file to check if there is no mod.

Check out wikipedia: http://en.wikipedia.org/wiki/MD5

Yes I am still interested in this code and getting it to work.

I'm not really bery experienced with the type of programming going on here.. could anyone explain what to substitute the Response for? since it's giving me an error..

As I mentioned before , bloggingabout.net got a bit unstable recently. Our administrator saw this, and

Yesterday , I posted about a problem with MSBuild building our solution. We solved it, so I wanted to

I'm not sure how binary you are, but I'm sure 1337 will give an exception or overflow or something! :)

hehe - lol. me 2; makes you wondered whether that indeed is a good thing, right?

13+14+10+13+1?

51?

i thought i would be C++ or Java... but thank god i didn't turn out to be Binary :)

What's the Solution to this problem?

I found the two updates which crippled my laptop&#39;s Windows installation. After uninstalling and re

I found the two updates which crippled my laptop&#39;s Windows installation. After uninstalling and re

I have also found how looking at a project from multiple perspectives early contributes significantly to the success of a project.  Recently, I've become involved in more Agile approaches to software development.  One of the key methods of agile devellopment is to get customer/users feedback early through iterative releases.  In regards to your post, identifying support as a customer (in addition to business users) would fit this model of development.

The TED website actually explains for me why you should watch Stephen Lawler&#39;s talk on Virtual Earth

Below is sample code that "should" work, but the animation doesn't work. It stops after the first image. I don't know what andyclap was saying, sounds like it was what he was referring to with the 3B, so do you know how to fix that?

Below, the two GIF images, "test.gif" and "ok.gif" that are on the C: drive will get animated to a "result.gif".

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Collections;

using System.Collections.Specialized;

using System.Drawing;

using System.Drawing.Imaging;

namespace GIF

{

   class Program

   {

       static void Main(string[] args)

       {

           //Variable declaration

           StringCollection stringCollection = new StringCollection();

           MemoryStream memoryStream;

           BinaryWriter binaryWriter;

           Image image;

           Byte[] buf1;

           Byte[] buf2;

           Byte[] buf3;

           //Variable declaration

           //stringCollection = a_StringCollection_containing_images;

           stringCollection.Add(@"C:\test.gif");

           stringCollection.Add(@"C:\ok.gif");

           //Response.ContentType = "Image/gif";

           memoryStream = new MemoryStream();

           buf2 = new Byte[19];

           buf3 = new Byte[8];

           buf2[0] = 33;  //extension introducer

           buf2[1] = 255; //application extension

           buf2[2] = 11;  //size of block

           buf2[3] = 78;  //N

           buf2[4] = 69;  //E

           buf2[5] = 84;  //T

           buf2[6] = 83;  //S

           buf2[7] = 67;  //C

           buf2[8] = 65;  //A

           buf2[9] = 80;  //P

           buf2[10] = 69; //E

           buf2[11] = 50; //2

           buf2[12] = 46; //.

           buf2[13] = 48; //0

           buf2[14] = 3;  //Size of block

           buf2[15] = 1;  //

           buf2[16] = 0;  //

           buf2[17] = 0;  //

           buf2[18] = 0;  //Block terminator

           buf3[0] = 33;  //Extension introducer

           buf3[1] = 249; //Graphic control extension

           buf3[2] = 4;   //Size of block

           buf3[3] = 9;   //Flags: reserved, disposal method, user input, transparent color

           buf3[4] = 10;  //Delay time low byte

           buf3[5] = 0;   //Delay time high byte

           buf3[6] = 255; //Transparent color index

           buf3[7] = 0;   //Block terminator

           binaryWriter = new BinaryWriter(File.Open(@"C:\result.gif", FileMode.Create));

           for (int picCount = 0; picCount < stringCollection.Count; picCount++)

           {

               image = Bitmap.FromFile(stringCollection[picCount]);

               image.Save(memoryStream, ImageFormat.Gif);

               buf1 = memoryStream.ToArray();

               if (picCount == 0)

               {

                   //only write these the first time....

                   binaryWriter.Write(buf1, 0, 781); //Header & global color table

                   binaryWriter.Write(buf2, 0, 19); //Application extension

               }

               binaryWriter.Write(buf3, 0, 8); //Graphic extension

               binaryWriter.Write(buf1, 781, buf1.Length - 782); //Image data

               if (picCount == stringCollection.Count - 1)

               {

                   //only write this one the last time....

                   binaryWriter.Write(";"); //Image terminator

               }

               memoryStream.SetLength(0);

           }

           binaryWriter.Close();

       }

   }

}

Actually, what I posted does work! Just make sure the dimensions are exactly the same for all the images. Also to see the animation a little better, I changed the old values of high and low byte to these:

buf3[4] = 88;  //Delay time low byte

buf3[5] = 0;   //Delay time high byte

I too was getting this error constantly and was almost at the point of switching to notepad2 to code in like my good old pre visual studio days. I was using the Cassini server on my laptop and got so fed up decided to install IIS to run the pages through that instead. Once IIS was installed, I tried Cassini some more and have not received that error a single time since. So, just wanted to mention that as a possible fix for this issue for those still seeing it. Worked for me with nicely.

Oh, as an FYI, someone here www.mcse.ms/message2503855.html mentions a side effect of setting the shadowCopyBinAssemblies to false.

Congratualtion, its a great achievement,i wish more certificats at IBM,  If you could providing me with some advice and share your study notes then it would be of great help aaokour84@yahoo.com  

I've just picked up this camera too and the Canon 75-300 zoom lens.

I would suggest your first purchase is a 58mm UV filter which does nothing but prevent your kit lens getting scratched.  I've also picked up a circular polarising filter which lets you cut out  reflections and get more dramatic shots with little effort.

[)amien

Hej Rick,

Congrats with your camera!

Suggestion: Get a flickr.com account. GREAT (and cheap) online storage for your pictures! And read a lot of forums like 'fotografie' on http://gathering.tweakers.net.. it has great show-cases and howto's.

Last week, I bought the Nikon D80 with the famous 18-200 VR lens. Must say, also a fantastic camera; I'm really pleased with the results!

Hope to see some of your best pics soon!

I ordered some stuff through the internet a week ago. The packet was sent through the Dutch postal service

I seriously doubt you can easily decode passwords encoded using MD5 (it is possible, but it may take you 10 million years...)

Why not just encrypt the entered password and then compare it against the record in the database?

Or am I missing something?

I was extracting some image data from a file stream into a Byte[] with the following function.

private byte[] get_image(FileStream f, int length) {

  byte[] image_array = new byte[length];

  for (int i=0; i<length; i++) {

     image_array.SetValue(f.ReadByte(), i);

  }

  return image_array;

}

I got this same error until I added a cast to the SetValue call like:

image_array.SetValue((byte)f.ReadByte(), i);

Thanks for pointing me in the right direction.

I ran the above code and it fails at the following line.

binaryWriter.Write(buf1, 0, 781); //Header & global color table

I found that buf1.Length is equal to 84.

Well then how can you expect buf1 to write 781 bytes when it has only 84 bytes.

Please explain.

Sorry, ignore that previous blog.

Another question: The code above works fine.

The only problem is trying to get the delay to work.

Any help on this please.

Hey Rick (i was reading a blog from Rene Schrieken and saw your blog): you really believe that a courier sends your parcel directly to the destination address? No way, much too expensive. I bet they both work the same....

Thanks Machan.It was help me to solve my problem.....

Have you tried setting the - character after the # mark? The value after that character is the unique ID for the rule.

Pingback from  Disable specific Code Analysis rules for a Team Build - Gump&#39;s blog

3 words...

Gartner Hype Cycle? ;-)

Yeah, I agree. I still hope that it's a vacation thing, though.

Or perhaps people are too busy with real projects to blog about them...

Hi ,

Congratulations .... on process certification ... Send me some pointers

pkudupi@yahoo.com

Regards,

Prashanth.

thanks for this. it's exactly what I was looking for.

exhausted.

deadlines.

no time.

for instance.

When are we going to see some more pics on your photoblog ?

It is now possible to "decode" passwords that use MD5 (It won't take you 10 million years either).

Computers are powerful enough now that you can use a rainbow table (a table for MD5 hashes for every combination of letters, numbers, and sometimes symbols, up to 14 characters) to check a hash against a rainbow table relatively easily. There's a program (the name escapes me at the moment) that will actually do this to crack windows passwords given their hash.

That is why it is important to salt your passwords before hashing. For example instead of this:

string hashedPass = MD5(password);

you would want to use this:

string hashedPass = MD5(aComplicatedSaltString + password);

Typically, a good salt would be the user's UserName and a programmer defined salt concatenated together.

That makes it harder to decode because then a hacker would have to add the salt when checking every password which would take the 10,000 years mentioned above (probably less than that, but still futile to attempt).

Hi guys,

I'm using MD5 to encypt my site passwords but I want to implement a "Forget Password" feature.

Is it possible to decrypt the array of bytes to what the user had entered initialy?

Thanks.

Parser Error Message: Access is denied: 'DSHHitCounter'.

I got this error some time automatically it over comes

Dreamscene is the final version, the technical preview has been around since march. I've used it since MIX'07 for the Silverlight background...

DreamScene is a very nice funny feature :)

Can u help me out i am also making a website i have to do same thing in my website in url its my messenger id can u contact me there farhanaeem@hotmail.com or through emails i will be very glad full to u

Hi andyclap,

I'd be interested in how you got this working. I'm struggling to understand the need for writing 781 bytes when my loaded image is only 129 in length.

Cheers,

Stuart.

not able to set the property value

The <CodeAnalysisRules> element is a part of <PropertyGroup> element in your case, which means that every tag (no matter what name it has) is valid, and it means definition of a property and assigning a value.

I'd suggest you put an edit on this post, to point to your other post where you described how to make this work:

bloggingabout.tellus.nl/.../howto-disable-specific-code-analysis-rules-for-a-team-build.aspx

Please use a StringBuilder in your examples.

And public methods need to be XML-commented.

Greetz, The Aov Service Team

Using StringBuilder would be slower because of initialization time of the object. And everyone knows about the XML comments, but it'd clutter up the sample.

Greetz, The BloggingAbout.NET Team ;)

Hi guys,

I tested the code above and drew the conclusion, that this code can work,

but does not have to.

(It will only work under certain conditions...)

Actually the code is not bad, but overlooks

several properties of the gif format:

Lets start with the creation of the buffers:

buf2:

This Buffer is the Application Extension for repeating the Animation,

and is completely correct as posted above.

Just additional:

buf2[16] = 0;  //Number of repetitions LowByte

buf2[17] = 0;  //Number of repetitions HighByte

The Value 0 indicates an endless loop.

buf3:

This Buffer is also absolutely correct

The only problem that I see with this is the way the pictures are merged:

memoryStream.ToArray() will give you the complete byte[] of the file, including

GIF-Signature, ScreenDescriptor, GlobalColorTable, Extensions, ImageDescriptor and ImageData.

You try to cut out the Start of each file until after the GlobalColorTable where the Picture specific Data beginns, and write one Table for the new gif-File:

//only write these the first time....

binaryWriter.Write(buf1, 0, 781); //Header & global color table

...

binaryWriter.Write(buf1, 781, buf1.Length - 782); //Image data

And therein lies the error:

This code would be perfectly correct for a gif with a GlobalColorTable of 256 Colors:

(3*256byte = 768byte + 6byte Signature + 7byte Screendescriptor = 781byte)

But you overlooked two possibilites:

First of all, a gif file does not necessarily have to contain a Global ColorTable,

but can have a LocalColorTable defined after each single picture

Another point is, that the ColorTables do not have to contain 256Colors.

A quite good help for this is:

www.matthewflickinger.com/.../bits_and_bytes.asp

So you have to Split your single pictures

into their components before you

merge the required components.

If you wish I will post the Code I wrote to

merge Gifs of the same size.

(i'm not posting it already now, because it will take quite a lot of space...)

Cheers,

Markus

Don't you think that validating the values of the arguments and the return value fall under Entry/exit coverage (one of the criteria of code coverage)? Meaning that your example would not have a 100% code coverage?

Nou jongen, gefeliciteerd!!

Ik hoop oprecht dat je vind waar je naar op zoek bent. Lijkt me een leuke club.

cu,

Rob

At my current project we made a project template for Visual Studio for our testers. We added all the

Gefeliciteerd en veel suc6!!!

greets from strapon :-)

Markus

It would be great if you could post your working code!

Rick, congrats man! Hope you find what you're looking for.

When asked about my point of view about a guideline concerning code coverage, my answer always is: go

From my professional point of view, I couldn't agree more with you on this post.

I don't think Completely unknown is heavy on the drama. I think that 80% is a nice score for developpers, and that they have performed way better then they ever did before.

But in terms of quality the problems will be in the 20% not covered. 20% is a big of amount of code....

Help is on the way dude! I've got something new that solved ALL my problems! I'll install it soon everywhere on BlogggingAbout.NET

Pingback from  Xbox Games  &raquo; Blog Archive   &raquo; My games list

My wishlist would be :

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

Call of Duty 4

And after thinking really hard, I chose Call of Duty 4. This game is AWESOME!!! Both SP and MP!!! There's no choice, go for CoD4!!!

its still a bug in visual studio 2008

Hi, Markus I'd really appreciate the code too! thanks!

OK, this could take some Space now...

I tested the Code with equalsized flags that are not animated from www.nationalflaggen.de

file GifClass.cs:

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Drawing.Imaging;

using System.IO;

namespace GifCreator

{

   public class GifClass

   {

       public GIFVersion m_Version = GIFVersion.GIF87a;

       public Bitmap m_Image = null;

       public List<byte> m_GifSignature = new List<byte>();

       public List<byte> m_ScreenDescriptor = new List<byte>();

       public List<byte> m_ColorTable = new List<byte>();

       public List<byte> m_ImageDescriptor = new List<byte>();

       public List<byte> m_ImageData = new List<byte>();

       public GifClass()

       { }

       public void LoadGifPicture(string filename)

       { LoadGifPicture((Bitmap)Bitmap.FromFile(filename)); }

       public void LoadGifPicture(Bitmap gifPicture)

       {

           m_Image = gifPicture;

           MemoryStream stream = new MemoryStream();

           m_Image.Save(stream, ImageFormat.Gif);

           List<byte> dataList = new List<byte>(stream.ToArray());

           if (!AnalyzeGifSignature(dataList))

               throw (new Exception("File is not a gif!"));

           AnalyzeScreenDescriptor(dataList);

           GIFBlockType blockType = GetTypeOfNextBlock(dataList);

           while (blockType != GIFBlockType.Trailer)

           {

               switch (blockType)

               {

                   case GIFBlockType.ImageDescriptor:

                       AnalyzeImageDescriptor(dataList);

                       break;

                   case GIFBlockType.Extension:

                       break;

                   default:

                       break;

               }

               blockType = GetTypeOfNextBlock(dataList);

           }

       }

       private bool AnalyzeGifSignature(List<byte> gifData)

       {

           for (int i = 0; i < 6; i++)

               m_GifSignature.Add(gifData[i]);

           gifData.RemoveRange(0, 6);

           List<char> chars = m_GifSignature.ConvertAll<char>(new Converter<byte,char>(ByteToChar));

           string s = new string(chars.ToArray());

           if (s == GIFVersion.GIF89a.ToString())

               m_Version = GIFVersion.GIF89a;

           else if (s == GIFVersion.GIF87a.ToString())

               m_Version = GIFVersion.GIF87a;

           else

               return false;

           return true;

       }

       private char ByteToChar(byte b)

       { return (char)b; }

       private void AnalyzeScreenDescriptor(List<byte> gifData)

       {

           for (int i = 0; i < 7; i++)

               m_ScreenDescriptor.Add(gifData[i]);

           gifData.RemoveRange(0, 7);

           // if the first bit of the fifth byte is set the GlobelColorTable follows this block

           bool globalColorTableFollows = (m_ScreenDescriptor[4] & 0x80) != 0;

           if (globalColorTableFollows)

           {

               int pixel = m_ScreenDescriptor[4] & 0x07;

               int lengthOfColorTableInByte = 3 * ((int)Math.Pow(2, pixel + 1));

               for (int i = 0; i < lengthOfColorTableInByte; i++)

                   m_ColorTable.Add(gifData[i]);

               gifData.RemoveRange(0, lengthOfColorTableInByte);

           }

           m_ScreenDescriptor[4] = (byte)(m_ScreenDescriptor[4] & 0x7F);

       }

       private GIFBlockType GetTypeOfNextBlock(List<byte> gifData)

       {

           GIFBlockType blockType = (GIFBlockType)gifData[0];

           return blockType;

       }

       private void AnalyzeImageDescriptor(List<byte> gifData)

       {

           for (int i = 0; i < 10; i++)

               m_ImageDescriptor.Add(gifData[i]);

           gifData.RemoveRange(0, 10);

           // get ColorTable if exists

           bool localColorMapFollows = (m_ImageDescriptor[9] & 0x80) != 0;

           if (localColorMapFollows)

           {

               int pixel = m_ImageDescriptor[9] & 0x07;

               int lengthOfColorTableInByte = 3 * ((int)Math.Pow(2, pixel + 1));

               m_ColorTable.Clear();

               for (int i = 0; i < lengthOfColorTableInByte; i++)

                   m_ColorTable.Add(gifData[i]);

               gifData.RemoveRange(0, lengthOfColorTableInByte);

           }

           else

           {

               int lastThreeBitsOfGlobalTableDescription = m_ScreenDescriptor[4] & 0x07;

               m_ImageDescriptor[9] = (byte)(m_ImageDescriptor[9] & 0xF8);

               m_ImageDescriptor[9] = (byte)(m_ImageDescriptor[9] | lastThreeBitsOfGlobalTableDescription);

           }

           m_ImageDescriptor[9] = (byte)(m_ImageDescriptor[9] | 0x80);

           GetImageData(gifData);

       }

       private void GetImageData(List<byte> gifData)

       {

           m_ImageData.Add(gifData[0]);

           gifData.RemoveAt(0);

           while (gifData[0] != 0x00)

           {

               int countOfFollowingDataBytes = gifData[0];

               for (int i = 0; i <= countOfFollowingDataBytes; i++)

               {

                   m_ImageData.Add(gifData[i]);

               }

               gifData.RemoveRange(0, countOfFollowingDataBytes + 1);

           }

           m_ImageData.Add(gifData[0]);

           gifData.RemoveAt(0);

       }

       private void ThrowAwayExtensionBlock(List<byte> gifData)

       {

           gifData.RemoveRange(0,2); // Delete ExtensionBlockIndicator and ExtensionDetermination

           while (gifData[0] != 0)

           {

               gifData.RemoveRange(0, gifData[0] + 1);

           }

           gifData.RemoveAt(0);

       }

   }

}

file GifCreator.cs:

using System;

using System.Collections.Generic;

using System.IO;

using System.Text;

namespace GifCreator

{

   public class GifCreator

   {

       public static void CreateAnimatedGif(List<string> gifFiles, int delay, string outputFile)

       {

           BinaryWriter writer = new BinaryWriter(new FileStream(outputFile, FileMode.Create, FileAccess.ReadWrite));

           byte[] gif_Signature = new byte[] { (byte)'G', (byte)'I', (byte)'F', (byte)'8', (byte)'9', (byte)'a' };

           writer.Write(gif_Signature);

           for (int i = 0; i < gifFiles.Count; i++)

           {

               GifClass gif = new GifClass();

               gif.LoadGifPicture(gifFiles[i]);

               if(i==0)

                   writer.Write(gif.m_ScreenDescriptor.ToArray());

               writer.Write(GifCreator.CreateGraphicControlExtensionBlock(delay));

               writer.Write(gif.m_ImageDescriptor.ToArray());

               writer.Write(gif.m_ColorTable.ToArray());

               writer.Write(gif.m_ImageData.ToArray());

           }

           writer.Write(GifCreator.CreateLoopBlock());

           writer.Write((byte)0x3B); //End file

           writer.Close();

       }

       public static byte[] CreateGraphicControlExtensionBlock(int delay)

       {

           byte[] result = new byte[8];

           // Split the delay into high- and lowbyte

           byte d1 = (byte)(delay % 256);

           byte d2 = (byte)(delay / 256);

           result[0] = (byte)0x21; // Start ExtensionBlock

           result[1] = (byte)0xF9; // GraphicControlExtension

           result[2] = (byte)0x04; // Size of DataBlock (4)

           result[3] = d2;

           result[4] = d1;

           result[5] = (byte)0x00;

           result[6] = (byte)0x00;

           result[7] = (byte)0x00;

           return result;

       }

       public static byte[] CreateLoopBlock()

       { return CreateLoopBlock(0); }

       public static byte[] CreateLoopBlock(int numberOfRepeatings)

       {

           byte rep1 = (byte)(numberOfRepeatings % 256);

           byte rep2 = (byte)(numberOfRepeatings / 256);

           byte[] result = new byte[19];

           result[0] = (byte)0x21; // Start ExtensionBlock

           result[1] = (byte)0xFF; // ApplicationExtension

           result[2] = (byte)0x0B; // Size of DataBlock (11) for NETSCAPE2.0)

           result[3] = (byte)'N';

           result[4] = (byte)'E';

           result[5] = (byte)'T';

           result[6] = (byte)'S';

           result[7] = (byte)'C';

           result[8] = (byte)'A';

           result[9] = (byte)'P';

           result[10] = (byte)'E';

           result[11] = (byte)'2';

           result[12] = (byte)'.';

           result[13] = (byte)'0';

           result[14] = (byte)0x03; // Size of Loop Block

           result[15] = (byte)0x01; // Loop Indicator

           result[16] = (byte)rep1; // Number of repetitions

           result[17] = (byte)rep2; // 0 for endless loop

           result[18] = (byte)0x00;

           return result;

       }

   }

}

Example to create a sequence of three not animated Gif-Pictures of the same size:

List<string> files = new List<string>(new string[] { "D:\\f1.gif", "D:\\f2.gif", "D:\\f3.gif" });

           GifCreator.CreateAnimatedGif(files, 50, "D:\\result.gif");

I hope this helps...

We had the same error in our project.  The MS knowledge base article on teh issue about making sure there are no relative paths to Source Control Provider was fruitless.

Turns out it was caused by a second "GlobalSection(TeamFoundationVersionControl) = preSolution" block in our sln file.  We removed the block that was in error, and the properties couild nto be read message went away.

Can you publish the values in the GIFBlockType enum.

I think it's

enum GIFBlockType

{

ImageDescriptor = 0x2C,

Extension = 0x21,

Trailer = 0x3B

}

Is this correct?

Thanks

Gary

You're absolutely right!

Sorry I forgot to add the enum file...

Thanks for adding this!

Seems the enum values were correct.

Also, there's a line missing in LoadGifPicture on the Extension case in the switch statement.

Add "ThrowAwayExtensionBlock(dataList);" before the break, and it will work.

Gary

can any one tell me what is GIFVersion,GIFBlockType

I'm doing programming in c# using the GIF class

I'm getting an error saying directive or assembly reference missing

I'm new to the world of C#, a complete apprentice in this field plz help me out!!

Include these two enums:

  public enum GIFVersion

  {

     GIF87a,

     GIF89a

  }

  public enum GIFBlockType

  {

     ImageDescriptor = 0x2C,

     Extension = 0x21,

     Trailer = 0x3B

  }

There's a line missing in LoadGifPicture(BitMap). Use this version:

      public void LoadGifPicture(Bitmap gifPicture)

      {

         MemoryStream stream = new MemoryStream();

         List<byte> dataList = new List<byte>(stream.ToArray());

         m_Image = gifPicture;

         m_Image.Save(stream, ImageFormat.Gif);

         if (!AnalyzeGifSignature(dataList))

         {

            throw (new Exception("File is not a gif!"));

         }

         AnalyzeScreenDescriptor(dataList);

         GIFBlockType blockType = GetTypeOfNextBlock(dataList);

         while (blockType != GIFBlockType.Trailer)

         {

           switch (blockType)

           {

              case GIFBlockType.ImageDescriptor:

                 AnalyzeImageDescriptor(dataList);

                 break;

              case GIFBlockType.Extension:

                 ThrowAwayExtensionBlock(dataList);    

                 break;

              default:

                 break;

           }

           blockType = GetTypeOfNextBlock(dataList);

        }

     }

Works a treat after that.

Gary

I used the latest version of LoadGifPicture method and I'm getting an error.

I created three 50*50 gif images and when i run this code it failed on

AnalyzeGifSignature(List<byte> gifData) method.

when it tries to add  m_GifSignature.Add(gifData[i]). The error is "Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index"

when i debug on the code LoadGifPicture is passing an empty gifData to AnalyzeGifSignature().

I created the datalist after it is saved in the memory stream and now works fine.

       public void LoadGifPicture(Bitmap gifPicture)

       {

           MemoryStream stream = new MemoryStream();

           m_Image = gifPicture;

           m_Image.Save(stream, ImageFormat.Gif);

           List<byte> dataList = new List<byte>(stream.ToArray());

           if (!AnalyzeGifSignature(dataList))

           {

               throw (new Exception("File is not a gif!"));

           }

Thanks for sharing this usefull info

The real choice will be do you want to use a .NET blogging platform like DasBlog, Subtext or BlogEngine or something with wider support, features, plugins and themes like WordPress.

I really wanted to stay in the .NET camp but was tempted over by those features as was Rob Conery...

[)amien

[)amien is right. Make a choice in platform.

If you decide for LAMP, consider Drupal or Joomla.

My blog is using Wordpress, but at the moment I'm settingup a new website where I can put more stuff on then just a blog and I'm using Joomla 1.5 for this. I'm switching because I want to share my presentations, articles and more information about myself. So I'm gone use it more then just as blogging software.

can anyone explain the purpose of these 2 enums??

public enum GIFVersion

 {

    GIF87a,

    GIF89a

 }

 public enum GIFBlockType

 {

    ImageDescriptor = 0x2C,

    Extension = 0x21,

    Trailer = 0x3B

 }

Sorry for late reply holidays and all not been keeping up on reading.

Anyway I have been kind of floating around for a while I tried Microsoft's live spaces. I like them but slow as all get out way too much ajax and javascript going on. It just really bogs the blog down.

I tried wordpress, host by them, it was ok, but had a lot of wierd script errors sometimes, I would never host it on my own server basically because it is PHP and I am not familiar enough  with PHP to make sure that I have plugged all the holes.

I tried blogger, and I really like them since they upgraded but I found them limiting as well in some aspects like being able to upload files and so on.

What I ended up doing is going with blog engine.net. They just released a new version right before Xmas that has full support for windows live writer and it's API's.

Also there are a lot of hosting companies finally getting into the virtual server hosting and it is really becoming dirt cheap. I got into solarvps when they were having a special and I got an excellent hosting deal from them like $30 a month for a fairly decent virtual server out on the internet. I really like this because it allows me to be fully in charge of the server and I can do anything I want and install anything I want. I am in full control of the server. This also mean I have to put on the firewall and set it up and I have to put on the antivirus and set it up and I have to patch it and so on. Anyway this allows me to have multiple domains and so on so this is another option.

Today was the first of two introduction days at Avanade . Maybe you missed it, but I started there today

Hi

Thanks for this help.

Regarding the CreateAnimatedGif method above, what units of time measurement is the delay parameter?  I have tried many values, but I could never get more than a couple seconds delay between frames.  Is there a way to put a delay of 5 or 10 seconds between frames?

Thanks in advance for your help.

Okay, I answered my own question.  I think there may be a slight problem with the CreateGraphicControlExtensionBlock method.  When I changed

          result[0] = (byte)0x21; // Start ExtensionBlock

          result[1] = (byte)0xF9; // GraphicControlExtension

          result[2] = (byte)0x04; // Size of DataBlock (4)

          result[3] = d2;

          result[4] = d1;

          result[5] = (byte)0x00;

          result[6] = (byte)0x00;

          result[7] = (byte)0x00;

to

          result[0] = (byte)0x21; // Start ExtensionBlock

          result[1] = (byte)0xF9; // GraphicControlExtension

          result[2] = (byte)0x04; // Size of DataBlock (4)

          result[3] = (byte)0x00;

          result[4] = d1;

          result[5] = d2;

          result[6] = (byte)0x00;

          result[7] = (byte)0x00;

Everything started working correctly and the delay time became 100ths of a second (delay of 100 = 1 second).

Hi  Markus,

i dont know how to use your code? Both are class files or vb file? can you explain please?

Really helpful.

It's a good thing they made a small yet significant change to the license. Quote from Scott's posting:

"We made a small change to the license to specifically call out that the license does not apply to users developing software for a non-Windows platform that has “the same or substantially the same features or functionality” as the .NET Framework. If the software you are developing is for Windows platforms, you can look at the code, even if that software has "the same or substantially the same features or functionality" as the .NET Framework."

If you're asking is it possible to simply reverse a hash the answer is NO.

A hash is a one-way function. It's simply a fixed-length "checksum" of sorts that is created based on the data presented. There is no reverse algorithm. That's the whole point.

The problem with trying to decode an MD5 hash is that it doesn't matter whether the message was three letters long or 500 pages long, the resulting hash it only 128 bits or 32 characters.

The most common way to crack MD5 hashed passwords is to use a program to systematically hash a dictionary or list of words (or random combinations of letters and numbers) until the resultant hash equals the hash you want to crack.

It's called a brute-force attack because you basically forcibly try every combination until you crack it.

If the password you are trying to crack is a simple or single word found in the dictionary, you can crack it in a matter of minutes or even seconds. If the password is long and complex, this method is typically fruitless.

That's why it is important to enforce complex password requirements of at least 8 characters, upper and lower case with at least one symbol (*&^, etc.

This worked for me too. Thanks!

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Why doesn't this work in dot.net within a apxs file?  Where do I put the with statements?  In the script tag or within the <%@ tag?

Info on using "C# 3.0" in .NET 2.0

bloggingabout.net/.../using-c-3-0-from-net-2-0.aspx

bloggingabout.net/.../compiling-a-net-3-5-project-and-running-on-a-net-2-0-machine.aspx

First and the only IBM official RUP certification guide is now available. Please follow the link below to order:

www.amazon.com/.../ref=sr_1_2

Thanks!!

Including a bug (allready sent to the development-team):

try to add a folder named "app_data"

Adding will work, but then opening that folder will give you an error.

Try doing an IISReset.  That seems to work for me.

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Hello ,good post

but I don't know how to use this ??

I made a class like your steps but

error faced me =>'ThemeModule' does not implement interface member 'System.Web.IHttpModule.Dispose()'

so how to solve this

also after building the class , what is next

sorry I'm new in that. thank you very much

Can you help me in using the BootStrapper?

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Hey there,

Add this:

   public void Dispose()

        {

        }

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hey there,

i add the method dispose() but the error msg is that the system can not load type="Howtos.ThemeModule"

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You've been kicked (a good thing) - Trackback from DotNetKicks.com

I also had 2 TeamFoundationVersionControl GlobalSection's in my sln file, removing one fixed my issues as well.  Cheers.

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Thank you very much for this article!!!

I just spent several hours pulling my hair out trying to figure out why 3 linkbuttons inside an UpdatePanel were causing full postbacks instead of just async posts. I added several new links and they all did async posts as expected. After reading your article I finally noticed the id's were missing on the 3 malfunctioning linkbuttons. Simply adding the id's fix the problem.

I owe you a beer...

Yeah, when I capture a dropdown event and display a messagebox to the user, the combobox still shows in "droppeddown" mode.

I can't figure out how to automatically close the dopped down potion so it's not down anymore. Everything I do (that makes sense to me) doesn't work. Even setting droppeddown states to false, double-setting selectedindex to -1, nothing works

Hi Rick,

The code on your post will not collect controls that inside other controls (TextBox inside FormView etc...)

To really collect all the controls from a specified type you need to run recursive method.

Take a look at the solution:

mironabramson.com/.../Collect-all-controls-from-specific-type.aspx

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can u please provide the code for decoding also...

encoding i did but i want to retrieve the encoded string from the database n compare it with the password field when the user logs in again for this i need to decode the string so tht it comes to its original value n then i can compare it with the password tht user enters...

reply asap

thanks

You'll be punished like &#*$( by Google for duplicating content over multiple domains! :)

Great! Thanks for taking the time to post this

Thanks for this.  Like you I was having terrible problems but svenM's reg fix cured it.  I already had a key called VersionIndependantProgID but I went ahead and added the ProgID as recommended and everything worked.

I'm new at integrating ajax with sharepoint but your topic is exactly what's happening with my site.

I've created a webpart and my controls are added to the updatepanel.  Within the class I've created a handler for the onclick event of a button.  The event is been fired but the page (Master page) in sharepoint does not refresh with the changes caused by the click event.

Also, I'm using the SelectedIndexChanged event to populate dropdownlists.  When I select an item in the list the page does a full refresh.  These controls are also added to the updatepanel.  They show up on the page in sharepoint but do not function properly.  Your code example is simple.  I'm using vb.net and in my class I don't have access to the page_load event.  Would you mind pointing me in the right direction?

regards,

amorris01@yahoo.com

Otra vez un poco de retraso antes de poner las noticias, pero buena ración de las mismas: Microsoft Robotics

Hi Rick,

Congratulations .... on process certification ... I got 93 % in tht exam. Does anyone have any study materials on the latest version 7.0 of RUP Test 839??

email: amit.sk.sen@gmail.com

Excellent, exactly what I was looking for too!!

Not to do with Team, but older fashioned VSS 6.0. Duplicate SoureControl section was the cause.

Nice one.

:o)

Thaks a lot. This one saved me a lot of investigation.

I had to change the method from static to non static.

Here it is how it works for me:

methodInfo.Invoke(Activator.CreateInstance(_type), New Object() {_paramArray})

I just had to add Activator.CreateInstance

Animated GIF Encoder for .NET Update

LOL!

Yeah, blame the Extender! ;-)

Hi,

I am facing the Same error can you tell me the soultion for this.as i cannot hardcode my values in the dropdownlist it seems to be preety big problem.aslo i am facing the situation which is even more worse.actually my code is working fine on my local systembut when i deployed the code on the Server the error occurs i could not able to track the reason for it until now..Can anyone help me.??

>Try doing an IISReset

You can also:

Re-start VS

Re-start your computer

Put your finger in the air and whistle

All of these <may> fix the problem, as it is intermittent - one minute the error pops up, you close the browser and try again and the error doesn't pop up.

Adding the entry in web.config fixed the problem. thanks for posting this.

adding id? where is the id to be added?

can anyone please show me where linkbutton id to add?

Heh.. As Scott I did not set ID for my linkButton. Why? "Because it is autogenerated". Men, thanks for saving my time :) Second beer from me.

For everyone asking for how to decode hashes, YOU CAN'T.  That is the POINT.  You can hash a string and compare it to your already computed hash, that is IT.  Read a wikipedia on computer hashes for gods sake.

Also, to the original poster, Rick van den Bosch... shame on you for using ASCIIEncoding.Default.GetBytes().  You do realize that would seriously restrict the usefulness of your method to working only in languages that ASCII has the character sets for, right?

I suggest you read this article entitled:

The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)

www.joelonsoftware.com/.../Unicode.html

mani, you do not "decode" a hashed password. It's impossible.  Hashing is not encryption.   Once hashed, you cannot restore it to the original password.

To test to see if the user entered the right password, you hash the password the user enters on the login screen, and compare the result to the password-hash stored in the database.

The benefit here is that even someone who can see into the database cannot know what the users password is.

The downside is that if a user looses their password, you cannot look it up to tell them.  You need to have the system generate a temp password and mail it to them.

Caused by the html closing tag (forward slash /), Try escaping it

Thank you man. It work exactly as I needed.

My guess is that the finalObjects list changes since the Ranking values change (and therefore the result of the query changes). LINQ uses lazy evaluation; the result set is not determined when sortedObjects is assigned its value but only once you start iterating.

en.wikipedia.org/.../Lazy_evaluation

How did you account for the style changes when adding the DOCTYPE?

The situation I talked about in my previous post had one very big issue: LINQ sometimes just is too dynamic

I could not help but laugh to myself when reading this post. Sometimes we think the problem is with the “equipment” when many times it’s a simple, easy fix.

Thanks, worked fine.

Your solution does exactly what you didn't want it to in the first place i.e.: it sets theme for each page in the whole web site.

Couldn't you have just made your updatepanel's conditional?

I worked on webpart for sharepoint that use AJAX and I was really angry why my code didn't work. You get me the answer. Thank you!!!

Hi Rick,

Did you ever stop to think that this is a nasty kludge? I read the original MSDN forum post - frankly, I think it stinks.

That's not to say that it doesn't work, but it's a lot of work for something that should be trivial (not leaky and inherently sprawling). Now **that's** worth blogging about.

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Can you post a sample of your code. How to use the CascadingDropdown without the Webservice but a method instead. What entries do you use for ServicePath and Category.

thanks,

What is the length of the generated string ?

Is it fixed?

Somebody should know the length (at least the max) to

store this to database.

It really worked with the updatepanel and can u please let me know how to apply triggers concept of ajax to the sharepoint.Is some code need to be added to the Page load event to apply triggers concept?

Ziet er leuk uit, alleen vind ik de html die ervoor gebruikt is dan weer iets minder.

Use Image button instead of linkButton and use small pics as its caption. It will work fine and not result as full postback.

For I = 1 To 10

Dim imgBtnDel As New ImageButton

imgBtnDel.ImageUrl = "~/Buttons/Delete.jpg"

imgBtnDel.CommandName = "Delete"

imgBtnDel.CommandArgument = i

AddHandler imgBtnDel.Command, AddressOf Me.imgCommand

.............Controls.Add(ImageButton1)

Next I

Sub imgCommand(ByVal sender As Object, ByVal e As CommandEventArgs)

Label1.Text = e.CommandName & " - " & e.CommandArgument

End Sub

Thanks a lot Raghavendra, What I was missing is Activator.CreateInstance(_type). You resolved that!!!

A comparison between ProFont and Consolas.

home.graffiti.net/.../profontVSConsolas.jpg

Basically Consolas IS better overall, but both scores are pretty much the same anyway so it doesn't exactly matter.

Somehow, ProFont is better for me personally for the following reasons:

1) I never liked the idea of tall narrow fonts because it can be harder to quickly aqquire target values/parameters, highlight and copy+paste them since the font is horizontally compresssed already.

2) I'm more used to wider fonts because they match fonts like Verdana, Courier New, etc., fonts which I've been familiar with.

3) Tall fonts remind me of studying code in programming books, but not writing/typing them. Somehow, wider fonts tend to emphasise a horizontal flow & speediness which works well for "snippet-style" programming.

4) ProFont brings out the structure and form of any piece of code (no matter how complicated or "messy") very well with the chunks, branches, values and parameters easily identifiable and isolated. Consolas (or other narrow-based fonts) tend to be pretty average in this area.

I disabled both Indexing services & antivirus and it worked. McAfee applied this policy "Common Maximum Protection:Prevent creation of new executable files in the Windows folder"

Thank you all.

Thank u that was helpfull.

i created a c# web form contains 2labels,2textboxes and button(ok).when click on ok in should verify the userid and  password fron sqlserver if the userid is correct the permit to go for next page.

for this i need code for that

Hi Amit,

I am also preparing for RUP cert. ( 839 ) .

I will be very thankfull If you can provide me some study material and sample questions.

email : vishal_igi@yahoo.com

Thanks...

-vishal

+1 on the duplicate globalsection

But does this work if your .NET assembly was built in Release mode?  I would hazard a guess of No...

Try using the publishing site portal,it doen not see any style changes plus it already has a doctype HTML transitional so u dont need to worry of adding XMLNS

also make sure you include panelfixups() just before adding the user control in createChildControls().

and do not keep modal popup inside the update panel

thanx!!

I've been using it for a week now, works excellent. Posted some quick start tips in this post. Really like the tool.

The great thing is that you can connect to a DebugView app on a server (test server of course!!! ;-) and view the messages locally in DebugView.

It was a very much helpfull stuff for me .

Now can you tell me how to decode the encoded password back.

Thank You....

Plz Tell me the advantage to call funtions by Delegate Method

U can avoid these kind of error by setting validateRequest="false" in the <%@ Page dirctive........ :)

Regards,

I don't know if you managed to get this working or not, but svenM's article maybe a bit misleading.

He says if you have the ProgID key you don't have the same problem has him, but the value of the key could be wrong, wich was my case. And don't forget to restart VS after you change the registry.

Hope it helps

Hi,

I'm also preparing to take 839. Can you please share with me pointers or sample tests or refer to study materials. Thanks.

Hehehe... een typische babelfish vertaling :)

Thanks man!!! That was pretty useful.

Thanks for a great article and for saving alot of more hours of work for me!

I started getting 'access denied' error. Do I need to do something else?

It works.

Thanks a lot.

many thanks

Here's utilty function to wrap it:

public static T Parse<T>(string value) {

    return (T)Enum.Parse(typeof(T), value);

}

MyEnum foo = MyEnum.Foo;

string foobar = foo.ToString();

MyEnum bar = EnumHelper.Parse<MyEnum>, foobar);

Awesome!  You just solved a very frustrating problem for me.  Thanks!

Hi All,

Any help for the IBM Test 839 RUP V7 is really appreciated. I am looking for some questions and answers.

My e-mail ID is adityajairam.soory@gmail.com

Thanks...AJ

Very nice, Freelancing / having your own company is a great way to earn a living.

Wish you the best in your endevours.

BTW there is an error on:

www.kennismakelaardij.nl/.../huizenaanbod.php

That is great news Rick! I'd like to wish you guys good luck with the brand new company. Up to total world domination and beyond! :)

Because I stopped working at Avanade and started my own company (this website is under construction and

This error is really pissing me off :(

That also did the trick for me, thanks.

Thank you very much. It was very helpful for me.

Three lines, much faster:

       public static string MD5Encrypt(string data)

       {

           MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();

           byte[] result = md5.ComputeHash(Encoding.UTF8.GetBytes(data));

           return Encoding.UTF8.GetString(result);

       }

hello everyone,

Problem with Ajax Enabled Application running at server as whenever i leave the page(startup page) for few minutes and then if try to login it shows popup window with below message so i m in great problem so  pls provide me solution for this.

"Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server.  The status code returned from the server was: 500

wth r these codes for!

Thanks for this.  I was having the same problem when trying to connect to an Access DB file and svenM's reg fix cured it.  I already had a key called VersionIndependantProgID but I went ahead and added the ProgID as recommended and everything worked. Thanks for your post.

very good..really helpful

Thank you...

That was our exact problem too. Thanks.

You've been kicked (a good thing) - Trackback from DotNetKicks.com

The ASP.NET Charting Controls have been announced last month. The charting controls are a nice addition

it's a contest?   :-D

1 line:

public static string MD5Encrypt(string data)

{

return Encoding.UTF8.GetString((new MD5CryptoServiceProvider()).ComputeHash(Encoding.UTF8.GetBytes(data)));

}

Hi all,

Please the code for VB .NET?

i translate the code...

Imports System

Imports System.Collections.Generic

Imports System.Drawing

Imports System.Drawing.Imaging

Imports System.IO

Namespace GifCreator

   Public Class GifClass

       Public Enum GIFVersion

           GIF87

           GIF89a

       End Enum

       Public Enum GIFBlockType

           ImageDescriptor = &H2C

           Extension = &H21

           Trailer = &H3B

       End Enum

       Public m_Version As GIFVersion = GIFVersion.GIF89a

       Public m_Image As Bitmap = Nothing

       Public m_GifSignature As New List(Of Byte)()

       Public m_ScreenDescriptor As New List(Of Byte)()

       Public m_ColorTable As New List(Of Byte)()

       Public m_ImageDescriptor As New List(Of Byte)()

       Public m_ImageData As New List(Of Byte)()

       Public Sub New()

       End Sub

       Public Sub LoadGifPicture(ByVal filename As String)

           LoadGifPicture(DirectCast(Bitmap.FromFile(filename), Bitmap))

       End Sub

       Public Sub LoadGifPicture(ByVal gifPicture As Bitmap)

           m_Image = gifPicture

           Dim stream As New MemoryStream()

           m_Image.Save(stream, ImageFormat.Gif)

           Dim dataList As New List(Of Byte)(stream.ToArray())

           If Not AnalyzeGifSignature(dataList) Then

               Throw (New Exception("File is not a gif!"))

           End If

           AnalyzeScreenDescriptor(dataList)

           Dim blockType As GIFBlockType = GetTypeOfNextBlock(dataList)

           While blockType <> GIFBlockType.Trailer

               Select Case blockType

                   Case GIFBlockType.ImageDescriptor

                       AnalyzeImageDescriptor(dataList)

                       Exit Select

                   Case GIFBlockType.Extension

                       Exit Select

                   Case Else

                       Exit Select

               End Select

               blockType = GetTypeOfNextBlock(dataList)

           End While

       End Sub

       Private Function AnalyzeGifSignature(ByVal gifData As List(Of Byte)) As Boolean

           For i As Integer = 0 To 5

               m_GifSignature.Add(gifData(i))

           Next

           gifData.RemoveRange(0, 6)

           Dim chars As List(Of Char) = m_GifSignature.ConvertAll(Of Char)(New Converter(Of Byte, Char)(ByteToChar))

           Dim s As New String(chars.ToArray())

           If s = GIFVersion.GIF89a.ToString() Then

               m_Version = GIFVersion.GIF89a

           ElseIf s = GIFVersion.GIF89a.ToString() Then

               m_Version = GIFVersion.GIF89a

           Else

               Return False

           End If

           Return True

       End Function

       Private Function ByteToChar(ByVal b As Byte) As Char

           Return CChar(ChrW(b))

       End Function

       Private Sub AnalyzeScreenDescriptor(ByVal gifData As List(Of Byte))

           For i As Integer = 0 To 6

               m_ScreenDescriptor.Add(gifData(i))

           Next

           gifData.RemoveRange(0, 7)

           ' if the first bit of the fifth byte is set the GlobelColorTable follows this block

           Dim globalColorTableFollows As Boolean = (m_ScreenDescriptor(4) And &H80) <> 0

           If globalColorTableFollows Then

               Dim pixel As Integer = m_ScreenDescriptor(4) And &H7

               Dim lengthOfColorTableInByte As Integer = 3 * CInt(Math.Pow(2, pixel + 1))

               For i As Integer = 0 To lengthOfColorTableInByte - 1

                   m_ColorTable.Add(gifData(i))

               Next

               gifData.RemoveRange(0, lengthOfColorTableInByte)

           End If

           m_ScreenDescriptor(4) = CByte((m_ScreenDescriptor(4) And &H7F))

       End Sub

       Private Function GetTypeOfNextBlock(ByVal gifData As List(Of Byte)) As GIFBlockType

           Dim blockType As GIFBlockType = DirectCast(gifData(0), GIFBlockType)

           Return blockType

       End Function

       Private Sub AnalyzeImageDescriptor(ByVal gifData As List(Of Byte))

           For i As Integer = 0 To 9

               m_ImageDescriptor.Add(gifData(i))

           Next

           gifData.RemoveRange(0, 10)

           ' get ColorTable if exists

           Dim localColorMapFollows As Boolean = (m_ImageDescriptor(9) And &H80) <> 0

           If localColorMapFollows Then

               Dim pixel As Integer = m_ImageDescriptor(9) And &H7

               Dim lengthOfColorTableInByte As Integer = 3 * CInt(Math.Pow(2, pixel + 1))

               m_ColorTable.Clear()

               For i As Integer = 0 To lengthOfColorTableInByte - 1

                   m_ColorTable.Add(gifData(i))

               Next

               gifData.RemoveRange(0, lengthOfColorTableInByte)

           Else

               Dim lastThreeBitsOfGlobalTableDescription As Integer = m_ScreenDescriptor(4) And &H7

               m_ImageDescriptor(9) = CByte((m_ImageDescriptor(9) And &HF8))

               m_ImageDescriptor(9) = CByte((m_ImageDescriptor(9) Or lastThreeBitsOfGlobalTableDescription))

           End If

           m_ImageDescriptor(9) = CByte((m_ImageDescriptor(9) Or &H80))

           GetImageData(gifData)

       End Sub

       Private Sub GetImageData(ByVal gifData As List(Of Byte))

           m_ImageData.Add(gifData(0))

           gifData.RemoveAt(0)

           While gifData(0) <> &H0

               Dim countOfFollowingDataBytes As Integer = gifData(0)

               For i As Integer = 0 To countOfFollowingDataBytes

                   m_ImageData.Add(gifData(i))

               Next

               gifData.RemoveRange(0, countOfFollowingDataBytes + 1)

           End While

           m_ImageData.Add(gifData(0))

           gifData.RemoveAt(0)

       End Sub

       Private Sub ThrowAwayExtensionBlock(ByVal gifData As List(Of Byte))

           gifData.RemoveRange(0, 2)

           ' Delete ExtensionBlockIndicator and ExtensionDetermination

           While gifData(0) <> 0

               gifData.RemoveRange(0, gifData(0) + 1)

           End While

           gifData.RemoveAt(0)

       End Sub

   End Class

End Namespace

Have a 2 error:

1)

ByteToChar: Delegate 'System.Converter(Of Byte, Char)' requires an 'AddressOf' expression or lambda expression as the only argument to its constructor.

2)

gifData(0): Value of type 'Byte' cannot be converted to 'WindowsApplication1.GifCreator.GifClass.GIFBlockType'.

thanks

sorry for my English :)

who work with radius server encypt user password?

sample don't work :(

string pswrd = "1";

string key = "key";

byte[] keyBytes = Encoding.Default.GetBytes(key);

byte[] authBytes = radius.Authenticator; //byte[16]

byte[] pswrdBytes = new byte[16];

Encoding.Default.GetBytes(pswrd).CopyTo(pswrdBytes, 0);

int b1Len = keyBytes.Length + authBytes.Length;

byte[] b1 = new byte[b1Len];

keyBytes.CopyTo(b1, 0);

authBytes.CopyTo(b1, keyBytes.Length);

byte[] hash = getMd5Hash(b1);

byte[] res = new byte[16];

for (int i = 0; i < 16; i++)

{

  pswrdBytes[i] ^= hash[i];

}

I tried the above steps, but still i am getting problem.I am able to view the modal popup in the site, but it appears in the left topmost cornet of site. Please help me to solve the issue

La necesidad de encriptar (ocultar a simple vista) información no es necesidad propia en los sistemas

you need to do custom error handling to handle such type of error.

In the "EndRequestHandler" just add the following code.

 if (args.get_error() != undefined)

 {

   // If there is, show the custom error.

   $get('Error').style.visibility = "visible";

   // Let the framework know that the error is handled,

   //  so it doesn't throw the JavaScript alert.

   args.set_errorHandled(true);

 }

Hi,

This is very useful...

But I want to how to Decode it..

Hoping a reply..

Tnx...

:)

Nice post I'm facing the same problem I will try this now.

Thanks

Satalaj

Hello,

here you can find a very simple solution:

social.msdn.microsoft.com/.../79e84cfe-3d4b-43c7-8d86-723208e4a64c

From that post:

"This happens only occasionally when making changes to the aspx file, and then hitting F5 for 'Start Debugging'.  If I manually modify the the designer.cs file in question (just add a space somewhere), save it, and go, the problem disappears."

I tried it and it works!!

I found something similar using FxCop on some code I wrote.

I had to add the reference to microsoft.sharepoint.security

Bye from Italy,

Gilda

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Thanks !

One byte in "buff2" must control whether or not to loop the animation. It would be nice if you could add this information in the code as comment.

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Thanks so much, it did save me time!

My org (MGSI - Microsoft global services india) falls under WorldWideServices arm of Microsoft and is

How to identify Web.UI.Controls using StyleCop?I want to make custom rule for .net UI.controls' naming convention.

Thank you!!!

Bravo!  Problem fixed with removal of the second source control section.  

I had renamed the root namespace on a bunch of my projects and had removed/readded to source control (VSS2005).  I wonder why VS causes this error?  

Any help on applying this in vb?

Could you show some ways to apply the DetermineTheme method? Would you suggest cookies, session variables, etc?

Thanks, this is what i was looking for :)

Hi,

This did not solve my problem entirely, I don't have any click event associated with the link button, but itgenerated dynamnically and added to the placeholder which is in a updatepanel and has only clientsideclick to show a modalpopup extender on the page, but it results in fullpostback when I click on the link it just shows the modal and then does the postback eventually hiding the modal again as page gets reloaded!! crazy thing any idea why this is behavinig this way?

Regards,

Santhosh

Get a Windows Home Server! It has an almost perfect full system backup-restore story for situations like this. Makes an automatic daily backup cycle really easy. Only takes about 15-30 minutes a day because it only sends clusters that have changed to the server. You can pick and choose the day to restore to. Just boot from the WHS Restore CD.

I just leave my laptop in sleep mode at night. It automatically wakes up in the middle of the night to back up and then goes back to sleep again. Works fine over wireless.

The hard disk you restore to doesn't even have to be the same size as the original.

You can also inspect and restore individual files from backups by just mounting them as an extra drive. So no need to do a full system restore in case you lost just a few files.

It respects EFS file encryption. These files are also encrypted in the backup and can only be read on systems that have the right EFS certificate.

I could go on and on... ;)

PS: Don't forget Live Mesh ;)

How can decode password which r store by encode form.

i m host to server in aspx page following error comes

SecurityException: That assembly does not allow partially trusted callers.

Hi,

this is very useful and simple way..

thanks...