日期:2014-05-18 浏览次数:20481 次
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> System.Data.DataView CreateDataSourceByXianhuiMeng() { System.Data.DataTable dt = new System.Data.DataTable(); System.Data.DataRow dr; dt.Columns.Add(new System.Data.DataColumn("id", typeof(System.Int32))); 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 = 1; i < 10; i++) { System.Random rd = new System.Random(Environment.TickCount * i); ; dr = dt.NewRow(); dr[0] = i; 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; } protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["id"] != null) { Response.ClearContent(); GridView1.DataSource = CreateDataSourceByXianhuiMeng(); GridView1.DataBind(); System.Text.StringBuilder sb = new System.Text.StringBuilder(); System.IO.StringWriter sw = new System.IO.StringWriter(sb); HtmlTextWriter htw = new HtmlTextWriter(sw); GridView1.RenderControl(htw); Response.Write(sb.ToString()); Response.End(); } } /// 添加这个override void VerifyRenderingInServerForm(Control control),是为了避免出现 /// 类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内。 /// 的异常 public override void VerifyRenderingInServerForm(Control control) { } </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>使用 AJAX,局部刷新 GridView 进行数据绑定的简单实现</title> <script type="text/javascript"> function GetData() { document.getElementById("d").innerHTML = "正在读取数据……"; h = window.XMLHttpRequest ? new window.XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP"); h.open("GET", '<%=Request.FilePath %>?id=xx&tmp=' + (new Date()).valueOf(), true); h.onreadystatechange = function () { if (h.readyState == 4) { if (h.status >= 200 && h.status < 300) { document.getElementById("d").innerHTML = h.responseText; } else { document.getElementById("d").innerHTML = "<h2>数据操作错误:</h2>" + h.responseText; } } } h.send(null); } alert("这个提示,只出现在第一次打开页面。"); window.onload = function () { GetData(); setInterval("GetData()",5000); } </script> </head> <body> <form id="form1" runat="server">