radtreeview has addNodesTo() method for faster adding a treenodecollection to the treeview. Do we have some simillar kind of method even to insert a treenodecollection to the treeview on the client side. Right now we can only insert one record at a time in the treeview, so is there some way to insert a collection of nodes to the treeview on the client side so that the output is fast.