So this is a pretty straightforward concern, but I wanted to add validation notation to a FieldTemplate's Label, and not necessarily its control. In ASP.NET's dynamic data, this isn't straightforward. What I found is that using Entity Templates...
By default, the Entity Data Model version of Dynamic Data allows you to use a Many-To-Many fieldtemplate user control, which on display shows you a nice list of links for each related entity. However, in some instances you might not want to show links...