I want to introduce you two new cool features in the RadTreeList for ASP.NET AJAX, available into the Q2 2011 release.
Sometimes you need to load dozens of rows into the RadTreeList, however the space where the RadTreeList control is placed on the page is not so big and the entire layout of the page is messed up. In this case you may feel some discomfort with necessity of scrolling. So here it is, you could use it when the page has limitations regarding the size of the RadTreeList control. To enable the scrolling of the RadTreeList you need to set the ClientSettings.Scrolling.AllowScroll property to true.