NodeClick
When the user clicks a Node, the NodeClick event fires. Use the RadTreeNodeEventArgs.Node property to get or set the clicked-on Node properties.
protected void RadTreeView1_NodeClick(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
{
e.Node.Text = "NodeClick fired for this node";
}
Protected Sub RadTreeView1_NodeClick(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadTreeNodeEventArgs)
e.Node.Text = "NodeClick fired for this node"
End Sub