#Custom Keyboard Command Provider #
RadPropertyGrid provides an easy MVVM-friendly approach for customization of its default commands' logic. 
This example demonstrates how to extend the way RadPropertyGrid handles a particular key. 
Press Tab to navigate forward through RadPropertyGrid elements or pres Shift+Tab to navigate backwards.

See also:
WPF: http://docs.telerik.com/devtools/wpf/controls/radpropertygrid/features/keyboard-support.html
SL: http://docs.telerik.com/devtools/silverlight/controls/radpropertygrid/features/keyboard-support.html