This could be handy:

http://code.msdn.microsoft.com/windowsapps/Windows-8-Modern-Style-App-Samples

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“Windows 8.1 Preview Code Samples

This sample pack includes all the app code examples developed and updated for Windows 8.1 Preview. The sample pack provides a convenient way to download all the samples at once. The samples in this sample pack are available in C#, C++, VB.NET, and JavaScript.The Windows Samples Gallery contains a variety of code samples that exercise the various new programming models, platforms, features, and components available in Windows 8.1 Preview and/or Windows Server 2012 R2 Preview. These downloadable samples are provided as compressed ZIP files that contain a Visual Studio solution (SLN) file for the sample, along with the source files, assets, resources, and metadata necessary to successfully compile and run the sample. For more information about the programming models, platforms, languages, and APIs demonstrated in this sample, please refer to the guidance, tutorials, and reference topics provided in the Windows 8.1 Preview documentation available in the Windows Developer Center. This sample is provided as-is in order to indicate or demonstrate the functionality of the programming models and feature APIs for Windows 8.1 Preview and/or Windows Server 2012 R2 Preview.”

 

HTH

Doug