Silverlight for Windows Phone

Silverlight, a cross-platform, cross-browser implementation of the .NET Framework for building media experiences and rich interactive applications for the Web on desktop computers, is also available for Windows Phone.

Silverlight includes a runtime that is optimized to display content on memory-constrained devices. Silverlight for Windows Phone is hosted on the client device and does not support applications that are hosted in a browser.

for further click on the following link:

http://msdn.microsoft.com/en-us/library/ff426934%28VS.95%29.aspx