Treeview doesn't update after treenode.remove

Question

I've written the following code to remove a node from a treeview. The node data isremoved, butthe node is still there. Apparently I need to force a refresh, as the selected node does go away when I navigate away and back to the page.

Can anyone help?
Thanks
Eyal

 //removes the node from the DB
 int remove = SchemaDB.DeleteGenericLink(originNode.Tag),TargetNode.Tag);

                if (remove)
                {
                    originNode.Remove();                   
                }
//this if, doesnt remove the originNode from the targetNode.Nodes