无比强大的GridView,表头固定,表体有滚动条可滚动

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<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server">  // 计算数据,完全可以从数据看取得  ICollection CreateDataSource( )  {    System.Data.DataTable dt = new System.Data.DataTable();    System.Data.DataRow dr;    dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));    dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));    dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));    dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));    dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));    dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));    for (int i = 0; i < 50; i++)    {      System.Random rd = new System.Random(Environment.TickCount * i); ;      dr = dt.NewRow();      dr[0] = "班级" + i.ToString();      dr[1] = "测试" + i.ToString();      dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);      dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);      dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);      dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);      dt.Rows.Add(dr);    }    System.Data.DataView dv = new System.Data.DataView(dt);    return dv;  }  protected void Page_Load( object sender, EventArgs e )  {    if (!IsPostBack)    {      GridView1.Attributes.Add("style", "table-layout:fixed");      GridView1.DataSource = CreateDataSource();      GridView1.DataBind();    }  }  </script><script type="text/javascript">    function s() {        var t = document.getElementById("<%=GridView1.ClientID%>");        var t2 = t.cloneNode(true)        for (i = t2.rows.length - 1; i > 0; i--)            t2.deleteRow(i)        t.deleteRow(0)        a.appendChild(t2)    }    window.onload = s</script><html xmlns="http://www.w3.org/1999/xhtml"><head>  <title>创建表头固定,表体可滚动的GridView</title></head><body>  <form id="Form1" runat="server">    <table>      <tr>        <td>          <div id="a">          </div>          <div style="overflow-y: scroll; height: 200px">            <asp:GridView ID="GridView1" runat="server" Font-Size="12px" BackColor="#FFFFFF"              GridLines="Both" CellPadding="4" Width="560">              <HeaderStyle BackColor="#EDEDED" Height="26px" />            </asp:GridView>          </div>        </td>      </tr>    </table>  </form></body></html>