Hi,

Is there a way to change the appearance of the ScrollBar of the treeView. I found a link in the forum  but this solution does not work 
http://www.telerik.com/community/forums/silverlight/treeview/scrollviewer-on-template.aspx 
: This sample the scroller does not scroll if the tree is more extanded 

Hi Khaldoun,

The suggestion in the forum thread is to disable the RadTreeView built-in ScrollViewer and wrap the control in another ScrollViewer. However, as the RadTreeView built-in ScrollViewer is designed to work in integration with the control, it's not recommended to replace it. But you can modify its style by editing the default ControlTemplate of the RadTreeView control and applying a custom style to the ScrollViewer.

I attached a sample project where you the RadTreeView built-in ScrollViewer style is edited. You can use this sample to get started on your task. Let me know if you need more info.

Kind regards,
Tina Stancheva
the Telerik team

Thanks the sample is great