All of the Microsoft samples are here:
http://code.msdn.microsoft.com/windowsapps/Windows-8-Modern-Style-App-Samples
You can request samples as well.
Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.
NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined
objects and unknown namespaces.