asp.net导出Excel显示中文乱码的解决方法

　　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"/>