Pane Group Items Source
IMPORTANT:
With our Q3 2013 SP release of RadDocking there is a new functionality for achieving MVVM scenarios that require an equivalent of ItemsSource with the addition of PanesSource. More details about the PanesSource feature can be found here: http://www.telerik.com/help/wpf/raddocking-features-panes-panesource.html
The example demonstrates how to extend the functionality of RadDocking with the use of Attached Properties in order to set a collection of Panes as ItemsSource of a specific PaneGroup for WPF.
For more detailed information could be found in this blog post: http://blogs.telerik.com/xamlteam/posts/13-01-14/extending-the-functionality-of-radcontrols-with-attached-properties