protected void btnExcel_Click(object sender, EventArgs e)     {         List<bUFlow.Model.orderhistory> orderlist = dal.GetOrderList2("");         string filename = "3g流量网龄升级计划用户表";         string name1 = filename;         string bname = Common.MyRequest.GetBrowserName().ToLower();         if (bname.Contains("firefox"))         {         }         else if (bname.Contains("ie"))         {             filename = HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8);         }         else         {             filename = HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8);         }         HttpResponse resp = System.Web.HttpContext.Current.Response;         resp.Charset = "utf-8";         resp.Clear();         resp.AppendHeader("Content-Disposition", "attachment;filename=" + filename + ".xls");         resp.ContentEncoding = System.Text.Encoding.UTF8;         resp.ContentType = "application/ms-excel";         string style ="<meta http-equiv="content-type" content="application/ms-excel; charset=utf-8"/>"+ "<style> .table{ font: 9pt Tahoma, Verdana; color: #000000; text-align:center;  background-color:#8ECBE8;  }.table td{text-align:center;height:21px;background-color:#EFF6FF;}.table th{ font: 9pt Tahoma, Verdana; color: #000000; font-weight: bold; background-color: #8ECBEA; height:25px;  text-align:center; padding-left:10px;}</style>";         resp.Write(style);         //resp.Write(ExportTable(list));         resp.Write("<table class='table'><tr><th>" +"手机"+ "</th><th>" + "渠道" + "</th><th>" +"时间" + "</th></tr>");         //dbVideoList = (List<subShiyongModel>)Session["dbVideoList"];         foreach (bUFlow.Model.orderhistory model in orderlist)         {             resp.Write("<tr><td>" + model.phone + "</td>");             resp.Write("<td>" + model.qudao + "</td>");             resp.Write("<td>" + model.tm + "</td>");             resp.Write("</tr>");         }         resp.Write("<table>");         resp.Flush();         resp.End();     }  

<meta http-equiv="content-type" content="application/ms-excel; charset=gb2312"/>