or
<ClientSettings> <DataBinding Location="https://locallhost/LoadWidgetsAsync.aspx" ResponseType="JSON"> <DataService TableName="Table1" /> </DataBinding> </ClientSettings>
<telerik:RadTreeList ID="RadTreeList1" runat="server" AllowMultiColumnSorting="True" AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="mynode" DataSourceID="SqlDataSource1" ParentDataKeyNames="mynode2"></telerik:RadTreeList>

