repeater 控件嵌套

页面代码:

<asp:Repeater ID="RepSort1" runat="server" OnItemDataBound="RepSort1_ItemDataBound">
      <ItemTemplate>
            <table>
                  <tr>
                     <th>
                        <a href='Show.aspx?sortid=<%#Eval("ID") %>'><%#Eval("TypeName") %></a>
                     </th>
                  </tr>
                  <tr>
                      <td ><%#Eval("ID") %></td>
                  </tr>
                  <asp:Repeater ID="RepSort2" runat="server" OnItemDataBound="RepSort2_ItemDataBound">
                       <ItemTemplate>
                           <tr>
                               <td class="mc"><%#Eval("TypeName") %></td>
                               <td>
                                    <asp:Repeater ID="RepSort3" runat="server">
                                        <ItemTemplate>
                                            <a href='#'><%#Eval("TypeName")%></a>
                                        </ItemTemplate>
                                    </asp:Repeater>
                               </td>
                           </tr>
                      </ItemTemplate>
                 </asp:Repeater>
             </table>
        </ItemTemplate>
</asp:Repeater>

后台代码:

protected void RepSort1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            Repeater rep = e.Item.FindControl("RepSort2") as Repeater;
            DataRowView rowv = (DataRowView)e.Item.DataItem;
            string pid=rowv["id"].ToString();
            rep.DataSource = GetItem(pid.ToString());
            rep.DataBind();
        }
}

protected void RepSort2_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            Repeater rep = e.Item.FindControl("RepSort3") as Repeater;
            DataRowView rowv = (DataRowView)e.Item.DataItem;
            string pid = rowv["id"].ToString();
            rep.DataSource = GetItem(pid.ToString());
            rep.DataBind();
        }
}


public DataSet GetItem(string pid)
{
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ConnectionString);
        SqlCommand com = new SqlCommand("select * from [P-Type] where pid="+pid, con);
        SqlDataAdapter da = new SqlDataAdapter(com);
        DataSet ds = new DataSet();
        da.Fill(ds);

        return ds;
}