WPF Sample on CodeGallery
The MSDN CodeGallery now has VB and C# sample for WPF data binding
https://code.msdn.microsoft.com/WPFDatabinding
This is a sample of a WPF application and includes data binding, data validation, lookup binding. The solution is VS2010 Beta1 based, but the application uses .NET Framework 3.5.
See also: Beth Massi’s WPF Forms over data videos using VS2008