Create a WPF UserControl Library Project In Visual Studio 2008 you can create a Windows Presentation Foundation (WPF) UserControl Library Project , and developing your own controls. Then, you need an application to run those controls, I will show here a static way to run one of the controls. Add WPF Application Project to the solution, and set a reference to the UserControl Library. App.xaml Your App.xaml is like the following xaml: < Application x:Class = " MyApp.App " xmlns = "...