If you’ve been wishing for some helpful designer gestures for your Silverlight DataGrid controls, look no further. The Silverlight Designer Sample is available at the WPF and Silverlight Designer Extensibility site. It demonstrates a pretty neat designer implementation for Silverlight’s TabControl and DataGrid controls.
Silverlight TabControl design-time implementation sample
Silverlight DataGrid design-time implementation sample
You’ll need Visual Studio 2010 Beta 1 or higher. Download the code from here: Silverlight Designer Sample and enjoy.