Repeater控件的嵌套方法

1.WEB控件

<asp:repeater ID="Class" runat="server" OnItemCreated="Class_ItemCreated">
     <itemtemplate>
            <asp:repeater ID="Forum" runat="server">
                 <itemtemplate>
                 </itemtemplate>
            </asp:repeater>
     <itemtemplate>
</asp:repeater>

2.CS文件
 //显示主分类
 strSQL = "SELECT * FROM forum WHERE rootid = 0";
 Adpt = new OleDbDataAdapter(strSQL, Conn);
 Adpt.Fill(Ds, "Class");
 Class.DataSource = Ds.Tables["Class"].DefaultView
         //二级分类
 protected DataTable Forum_Source(int id)
 {
  if (Ds.Tables.Contains("Forum") && Ds.Tables.CanRemove(Ds.Tables["Forum"]))
   Ds.Tables.Remove("Forum");
   strSQL = "SELECT * FROM forum WHERE rootid = @id";
   Cmd = new OleDbCommand(strSQL, Conn);
   Cmd.Parameters.Add(new OleDbParameter("@id", OleDbType.Integer)).Value = id;
   Adpt = new OleDbDataAdapter(Cmd);
   Adpt.Fill(Ds, "Forum");
   return Ds.Tables["Forum"];
  }
        //控件调用的OnItemCreated类
 protected void Class_ItemCreated(object sender, RepeaterItemEventArgs e)
 {
  ((Repeater)e.Item.FindControl("Forum")).DataSource = Forum_Source(int.Parse(((System.Data.DataRowView)e.Item.DataItem)["id"].ToString())).DefaultView;
 }