For the longest time I couldn't skin my custom control, background: a custom control looks like this:

public class MyGridView : GridView
{
...
}

This custom controls was in a separate class library.  Bill researched the problem and it appears that you can't skin a custom control that is in a nested namespace.  I.e. the custom control can't have this:

namespace MyNamespace.SubNameSpace
{
   public class MyGridView : GridView
   {   
   ...
   }
}

It has to be in a single namespace to work:

namespace MyNamespace
{
   public class MyGridView : GridView
   {  
   ...
   }
}

Visual Studio 2005 - .NET 2.0 - ASP.NET 2.0
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