Hello Balaji,
You can try this:
<telerik:RadTreeView ID="RadTreeView1" runat="server">
</telerik:RadTreeView>
<script type="text/javascript">
function pageLoad()
{
var treeView = $find("<%= RadTreeView1.ClientID %>");
var node1 = new Telerik.Web.UI.RadTreeNode();
node1.set_text("Added on the client-side 1");
treeView.get_nodes().add(node1);
var node2 = new Telerik.Web.UI.RadTreeNode();
node2.set_text("Added on the client-side 2");
treeView.get_nodes().add(node2);
}
</script>
Regards,
Albert
the Telerik team
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