ASP.net中的Repeater控件嵌套

非常喜欢使用Repeater控件，它能够生成干净的代码，手写代码写惯了，看着一堆的垃圾代码就头疼，这是我学习时做的一个Demo，留下备忘，应该有更好的代码实现，思考中......

页面代码：

<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<HeaderTemplate><ul></HeaderTemplate>
<ItemTemplate>
<li><%# Eval("cate_name") %>
    <asp:Repeater ID="Repeater2" runat="server">
    <HeaderTemplate><ul></HeaderTemplate>
    <ItemTemplate>
        <li><%# Eval("art_title") %></li>
    </ItemTemplate>
    <FooterTemplate></ul></FooterTemplate>
    </asp:Repeater>
</li>
</ItemTemplate>
<FooterTemplate></ul></FooterTemplate>
</asp:Repeater>

后端代码：

protected void Page_Load(object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        using(SqlConnection conn= new SqlConnection())
        {
            conn.ConnectionString = ConfigurationManager.ConnectionStrings["testdbConnectionString"].ConnectionString;
            conn.Open();
            using(SqlDataAdapter da = new SqlDataAdapter("select * from category",conn))
            {
                DataSet ds = new DataSet();
                da.Fill(ds);
                Repeater1.DataSource = ds;
                Repeater1.DataBind();
            }
        }
    }
}
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        Repeater rep = e.Item.FindControl("Repeater2") as Repeater;
        DataRowView rowv = (DataRowView)e.Item.DataItem;
        int cate_id = Convert.ToInt32(rowv["cate_id"]);
        using (SqlConnection conn = new SqlConnection())
        {
            conn.ConnectionString = ConfigurationManager.ConnectionStrings["testdbConnectionString"].ConnectionString;
            conn.Open();
            using (SqlDataAdapter da = new SqlDataAdapter("select * from article where owner_id=" + cate_id, conn))
            {
                DataSet ds = new DataSet();
                da.Fill(ds);
                rep.DataSource = ds;
                rep.DataBind();
            }
        }
    }
}

两个Repeater的嵌套，通过ID关联嵌套部分，输出如下: