If you've played with Microsoft Silverlight 1.0 Beta or 1.1 Alpha bits, you've no doubt noticed that while there's Canvas, TextBlock and other such controls, there is no Button or ListBox or even layout elements like StackPanel or Grid. Rest assured, your UI development needs are always on our mind.

If you download the Silverlight 1.1 Alpha SDK, you'll see a UI controls package in there. You didn't think we'd leave you in the lurch, did you?