Asp repeater and Sitemap provider issue

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C#

ASP.NET

Hi,
I have a repeater which looks at the sitemap provider to obtain the menu items. But the issue is, it is getting only the top level menu items and no submenu item. Below is the code please let me know what I have done wrong here. Thanks

<ul id="menu">
                   <!-- menu rendering starts here -->
                   <asp:Repeater runat="server" ID="rptrMenu" DataSourceID="SiteMapDataSource1" EnableViewState="False">
                       <ItemTemplate>
                           <li><a href="<%# this.ResolveUrl(Eval("Url") as string) %>"><%# Eval("Title") %></a>
                               <asp:Repeater ID="rptrSubmenu" runat="server" DataSource='<%# ((SiteMapNode)Container.DataItem).ChildNodes %>'>
                                   <HeaderTemplate>
                                       <ul>
                                   </HeaderTemplate>
                                   <ItemTemplate>
                                       <li><a href="<%# this.ResolveUrl(Eval("Url") as string) %>"><%# Eval("Title") %></a>
                                           <asp:Repeater ID="Repeater1" runat="server" DataSource='<%# ((SiteMapNode) Container.DataItem).ChildNodes %>'>
                                               <HeaderTemplate>
                                                   <ul>
                                               </HeaderTemplate>
                                               <ItemTemplate>
                                                   <li><a href="<%# this.ResolveUrl(Eval("Url") as string) %>"><%# Eval("Title") %></a></li>
                                               </ItemTemplate>
                                               <FooterTemplate>
                                                   </ul>
                                               </FooterTemplate>
                                           </asp:Repeater>
                                       </li>
                                   </ItemTemplate>
                                   <FooterTemplate>
                                       </ul>
                                   </FooterTemplate>
                               </asp:Repeater>
                           </li>
                       </ItemTemplate>
                   </asp:Repeater>
                   <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="false" />