c# – 在代码隐藏的aspx中添加>列表

<ul class="dropdown" runat="server" id="tabs"> </ul>

我的C#代码

DatTable dtOutput = Generix.getData("Get Some Data");

foreach (DataRow drOutput in dtOutput.Rows)
{
    HtmlGenericControl li = new HtmlGenericControl("li");                    
    tabs.Controls.Add(li);
    HtmlGenericControl anchor = new HtmlGenericControl("a");
    anchor.Attributes.Add("href","#");
    anchor.InnerText = Convert.ToString(drOutput["ModuleGroup"]);
    li.Controls.Add(anchor);
    HtmlGenericControl ul = new HtmlGenericControl("ul");

    DatTable dtOutputList = Generix.getData("Get another set of Data");

    foreach (DataRow drOutputList in dtOutputList.Rows)
    {                        
        HtmlGenericControl ili = new HtmlGenericControl("li");
        ul.Controls.Add(ili);
        HtmlGenericControl ianchor = new HtmlGenericControl("a");
        foreach (DataColumn dcOutputList in dtOutputList.Columns)
        {
            ianchor.Attributes.Add("href",Convert.ToString(drOutputList["ModuleFileName"]));
        }
        ianchor.InnerText = Convert.ToString(drOutputList["ModuleName"]);
        ili.Controls.Add(ianchor);                        
    }
    //tabs.Controls.Add(li);
}

当我运行我的项目并在我的菜单上检查元素时,我看到类似的东西

<ul id="ctl00_tabs" class="dropdown">
    <li class="">
        <a href="#">Master</a>
    </li>
    <li class="">
        <a href="#">Cards Management</a>
    </li>
    <li class="">
        <a href="#">Authorization</a>
    </li>
    <li class="">
        <a href="#">Loyalty</a>
    </li>
    <li class="">
        <a href="#">Reports</a>
    </li>
</ul>

li里面没有创建嵌套的ul标签？为什么？

例如 ：-

<ul id="ctl00_tabs" class="dropdown">
    <li class="">
        <a href="#">Master</a>
        <ul>
            <li><a href="Some.aspx"><span>Some Name</span></a></li>
            <li><a href="Some1.aspx"><span>Some Name 1</span></a></li>
        </ul>
    </li>
</ul>