I am using RadTreeView in a ascx which is embedded in a master page. A content page (aspx) that uses this master page has a RadGrid. Both RadTreeView and RadGrid are ajaxified using RadAjaxManager. When I expand the Tree View, partial post back occurs and I loading node on-demand server-side. But when I click on a tree node, partial post-back occurs followed by a full post-back. What can I do to prevent the full post back from occuring?