Thanks for the reply. But in my case, the change is happened on the server-side.
Here is my senario:
1. I put a treeview in a user control and the user control is in the master page. A context menu is attached to the treeview.
2. From the context menu, I popup a RadWindow to edit treeview node properties and persist to DB.
3. After popup closed, in RadWindow "closed" event, I need to refresh the treeview to get the update.
The only way I see now is to use AjaxRequest to call a server method. Any other ways?