Rendering

RadTreeView renders DIV tags which produces a smaller page size, which is quicker to load and easy to style. For example, consider the following RadTreeView declaration that produces the screen shot below:

ASPNET

<telerik:RadTreeView RenderMode="Lightweight" ID="RadTreeView1" runat="server" LoadingStatusPosition="BeforeNodeText">
    <Nodes>
        <telerik:RadTreeNode runat="server" Text="Root Node" ExpandMode="ClientSide">
            <Nodes>
                <telerik:RadTreeNode runat="server" Text="Child Node" ExpandMode="ClientSide">
                </telerik:RadTreeNode>
            </Nodes>
        </telerik:RadTreeNode>
    </Nodes>
</telerik:RadTreeView>

The rendered output for this TreeView is as follows:

HTML

<div id="Div1" class="radtreeview RadTreeView_Default ">
<ul class="rtUL rtLines">
    <li class="rtLI rtFirst rtLast">
        <div class="rtTop">
            <span class="rtSp"></span><span class="rtPlus"></span><span class="rtIn">Root Node</span>
        </div>
        <ul class="rtUL" style="display: none;">
            <li class="rtLI rtLast">
                <div class="rtBot">
                    <span class="rtSp"></span><span class="rtIn">Child Node</span>
                </div>
            </li>
        </ul>
    </li>
</ul>
<input id="RadTreeView1_ClientState" name="RadTreeView1_ClientState" type="hidden" /></div>