Question

I have a asp.net sitemap with single level dropdown menu. I am using following code in master page to display them as dropdown menu by generating <li> and <ul>. It works fine the issue is, even if some items dont have child items it generates empty which leads to showing the dropdown icon.
How Can I stop the empty <ul> generation by checking the child nodes count.

    <!---  Menu -->
         <div id="horizontalcssmenu" class="horizontalcssmenu">
           <asp:SiteMapDataSource  ID="SiteMapDataSource1" ShowStartingNode="false" runat="server" />
                    <ul id="cssmenu1">
                        <li><a id="A1" href="index.aspx" runat="server">Home</a></li>

                        <asp:Repeater ID="foo" DataSourceID="SiteMapDataSource1" EnableViewState="false" 
                                        runat="server" onitemcommand="foo_ItemCommand">
                            <ItemTemplate>
                                <li>
                                    <a href='<%#Eval("url") %>'><%#Eval("Title") %></a>
                                    <ul>
                                        <asp:Repeater ID="bar" DataSource='<%# ((SiteMapNode) Container.DataItem).ChildNodes %>' runat="server">
                                            <ItemTemplate>
                                                <li><a href='<%#Eval("url") %>'><%#Eval("Title") %></a></li>
                                            </ItemTemplate>
                                        </asp:Repeater>
                                    </ul>

                                </li>
                            </ItemTemplate>
                        </asp:Repeater>
                    </ul>
                </div>
  <!-- Menu End -->

The output code displays something like this

   <!---  Menu -->
         <div id="horizontalcssmenu" class="horizontalcssmenu">
                    <ul id="cssmenu1">
                        <li><a href="index.aspx" id="ctl00_A1">Home</a></li>
                                <li>
                                    <a href='/SVSS/StudentFullDetails.aspx'>Student Details</a>
                                    <ul>
                                    </ul>
                                </li>
                                <li>
                                    <a href='/SVSS/StudentMonthlyAttendance.aspx'>Attendance</a>
                                    <ul>
                                    </ul>
                                </li>
                                <li>
                                    <a href='/SVSS/MyNotice.aspx'>Notice</a>
                                    <ul>
                                    </ul>

                                </li>

                    </ul>
                </div>
                <!-- Menu End -->

Answer 1

How about something like:

<%if(((SiteMapNode) Container.DataItem).ChildNodes.Length > 0) { %>
    <ul>
        <asp:Repeater ID="bar" DataSource='<%# ((SiteMapNode) Container.DataItem).ChildNodes %>' runat="server">
            <ItemTemplate>
                <li><a href='<%#Eval("url") %>'><%#Eval("Title") %></a></li>
            </ItemTemplate>
        </asp:Repeater>
    </ul>
<%}>