Creating Node Structure In-Line

You can define the RadTreeView structure inline, directly in the ASPX/ASCX file. To do this, enclose every RadTreeNode definition within the <telerik:RadTreeView> and </telerik:RadTreeView> tags. The example below has two root level nodes and a child node under the first root node. Notice in the markup for the RadTreeView that a <Nodes> tag surrounds one or more node definitions contained in <telerik:RadTreeNode> tags.

ASPNET

<telerik:RadTreeView RenderMode="Lightweight" ID="RadTreeView1" runat="server">
    <Nodes>
        <telerik:RadTreeNode runat="server" Text="My First Node">
            <Nodes>
                <telerik:RadTreeNode runat="server" Text="Child Node">
                </telerik:RadTreeNode>
            </Nodes>
        </telerik:RadTreeNode>
        <telerik:RadTreeNode runat="server" Text="My Second Node">
        </telerik:RadTreeNode>
    </Nodes>
</telerik:RadTreeView>

You can also use theRadTreeView Item Builder to interactively construct the RadTreeNode hierarchy.