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Just a quick little post today: I got the error "The Path 'path' is already mapped in workspace 'workspace'" when I connected to a new Team Foundation Server and tried to map my workspace today. I had connected to a Team Foundation Services project a while back to get some shared...
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A rather long title for this post, but that’s exactly what happened: when I opened an ASP.NET MVC 4 project with a cshtml view open, Visual Studio would crash with the error messages seen on the right. This would only occur if the first project I opened had a cshtml file open. When I opened another ...
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When building an ASPapplication that generates Word documents, it was working fine on the local machine. A windows XP installation with Office 2007. When we deployed it to windows 2008 (64 bit) and Word 2007 we saw that Documents.Open returned null. Other than this, there are no exceptions. The code...
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When installing SQL Server 2008 R2 on a Windows XP (or, according to the comments, Windows 7) development machine that has been around for quite some time, I got an error stating an unhandled exception occured in the application (see image). The error showed up directly upon startup and read: An error...
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Saving a file from Silverlight using the SaveFileDialog , added in Silverlight 3, is easy. If you’re used to desktop development however, you might find yourself getting a SecurityException with the message ‘File operation not permitted. Access to path 'xxx' is denied.’. Here’s why: In desktop...
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Recently I was working on a sandboxes solution, which included a WebTemplate ( Vesa "Vesku" Juvonen wrote a really nice post about it), but I couldn't deploy it, the followin error was displayed into Visual Studio 2010: Error occurred in deployment step 'Add Solution': Exception...
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Although the feature has been around since ASP.NET 2.0, I still meet people that don't know and/or use app_offline.htm. Do you know (and use) the feature...? When working on an ASP.NET web application, you should notify your visitors in a decent way that your application is down. There's a nice...
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Because we were still using an old Visual Studio 2005 solution which included a Web Site project, it was time to upgrade. We upgraded our Visual Studio 2005 solution to Visual Studio 2010 (and .NET 4.0), converted the Web Site Project to a Web Application Project and then, of course, the AjaxControlToolkit...
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When trying to pass some command line arguments to a Console Application, I got the following message: "The current project settings specify that the project will be debugged with specific security permissions. In this mode, command line arguments will not be passed to the executable. Do you want...
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I've had my current installation for a few months now, and I've used it for development purposes. Today I suddenly encountered an error when trying to add items to the Toolbox. Visual Studio 2008 simply disappeared... No errors, no warnings, it just went away. After some searching and a lot of...
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While developing a page that was to be used through an inline wrapper, I got an error: "Validation of viewstate MAC failed". This error can usually be resolved by disabling event validation , viewstate encryption or viewstate for the MAC . In my case these solutions did not resolve the issue...
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We developed an ASP.NET page (A) to be wrapped in an existing PHP page (B) using an inline wrapper. After a few days in which both pages displayed nicely, our page (A) suddenly got displayed twice inside the existing page (B). And even weirder was that the postbacks of the first occurrence didn...