.fixedHeaderTr
{
background-color:whitesmoke;
z-index:10;
position:relative;
top:expression(this.offsetParent.scrollTop);
}
gridview中：
<HeaderStyle CssClass="fixedHeaderTr" />
用css 比较好
---------------------第2种方法
Code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="BidManage_Default" %><!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>无标题页</title> <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></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>
CS文件：
Codeusing 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 BidManage_Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e)
{ if (!IsPostBack) { GridView1.Attributes.Add("style", "table-layout:fixed"); GridView1.DataSource = CreateDataSource(); GridView1.DataBind();
} } 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] = "【孟子E章】" + 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; }}
效果图：
