GridView表格嵌套问题!急!请大家帮忙!

环境:VS.NET2005+C#
目标:想利用GridView实现如下图所示表格嵌套(主表为TEST表(有ID,U_NAME,U_AGE三个字段),成绩一栏对应TEST2表(有ID,NAMES,CHN,ENG四个字段))

编辑思路:
1)创建GridView1,用于接收TEST表数据
2)在GridView1中加入<ItemTemplate>模板,并在<ItemTemplate></ItemTemplate>中添加GridView2,用于接收来自TEST2表的查询
3)分别创建SQlDataSource1(TEST表的查询)和SqlDataSource2(TEST2表的条件查询)
4)在GridView1的protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)事件中将GridView1的第2列的值传递给SqlDataSource2的参数,作为参数值

代码分别如下,请大家帮我看看....大恩不言谢!
TEST2.ASPX代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TEST2.aspx.cs" Inherits="TEST2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=ADSERVER;Initial Catalog=SZDK;Persist Security Info=True;User ID=sa;Password=62055639" ProviderName="System.Data.SqlClient" SelectCommand="SELECT [ID],[U_NAME],[U_AGE] FROM TEST">
      </asp:SqlDataSource>
      <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="Data Source=ADSERVER;Initial Catalog=SZDK;Persist Security Info=True;User ID=sa;Password=62055639" ProviderName="System.Data.SqlClient" SelectCommand="SELECT [ID],[NAMES],[CHN],[ENG] FROM TEST2 WHERE ([NAMES]=?)">
        <SelectParameters>
            <asp:ControlParameter ControlID="GridView1" Name="names" PropertyName="SelectedDataKey"
                Type="String" />
        </SelectParameters>
      </asp:SqlDataSource>
      <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"  DataSourceID="SqlDataSource1" DataKeyNames="ID"  AllowPaging="false" AllowSorting="false" PageSize="10" OnRowDataBound="GridView1_RowDataBound" >
        <Columns>
          <asp:BoundField DataField="ID" HeaderText="项次" InsertVisible="False" ReadOnly="True" />
          <asp:BoundField DataField="U_NAME" HeaderText="姓名" InsertVisible="False" ReadOnly="True" />
          <asp:BoundField DataField="U_AGE" HeaderText="年龄" InsertVisible="False" ReadOnly="True" />
          <asp:TemplateField HeaderText="成绩">
            <ItemTemplate>
              <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false" DataKeyNames="ID"  AllowPaging="false" AllowSorting="false" PageSize="10">
                <Columns>
                  <asp:BoundField DataField="ID" HeaderText="项次" InsertVisible="false" ReadOnly="true" />
                  <asp:BoundField DataField="NAME" HeaderText="姓名" InsertVisible="false" ReadOnly="true" />
                  <asp:BoundField DataField="CHN" HeaderText="语文" InsertVisible="false" ReadOnly="true" />
                  <asp:BoundField DataField="ENG" HeaderText="英语" InsertVisible="false" ReadOnly="false" />
                </Columns>
              </asp:GridView>
            </ItemTemplate>
          </asp:TemplateField>
        </Columns>
      </asp:GridView>
    </div>
    </form>
</body>
</html>

TEST2.ASPX.CS代码如下:using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class TEST2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            SqlDataSource2.SelectParameters["names"].DefaultValue=e.Row.Cells[1].Text;
            GridView gv = new GridView();
            gv = (GridView)e.Row.FindControl("GridView2");
            gv.DataSource = SqlDataSource2;
            gv.DataBind();
        }
    }
}

--------------------编程问答-------------------- 自己顶....帮帮我啊

补充：.NET技术 ,  C#