Hello Rene Schimmelpfennig,
I've created work item regarding this example for WPF. It will be included in the online and offline demos soon.
For now you can get the code and use it in WPF application - you should only remove the fluid behaviours that come with the Blend SDK for Silverlight. Everything else should work.
Let me know if we can be of further help.
the Telerik team
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