asp.net gridview 导出到excl

  public void Export_EXCL(GridView GridView1)
    {
        /**
         * 如果打印全部数据，则加上注视的代码
         * */
        //GVExport.AllowPaging = false;
        //GVExport.AllowSorting = false;
        //GVExport.DataSource = null;
        //GVExport.DataBind();
        DateTime dt = DateTime.Now;
        Response.ClearContent();
        Response.Buffer = true;
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
        string filename = "export_" + dt.ToString("yyyyMMddHHmm") + ".xls";
        string[] browsers = { "Firefox", "AppleMAC-Safari", "Opera" }; //针对FF、Safari、Opera 设置编码
        string browser = Request.Browser.Browser;
        string attachment = string.Empty;
        if (Array.IndexOf<string>(browsers, browser) != -1)
        {
            attachment = "attachment; filename=" + filename;
        }
        else
        {
            attachment = "attachment; filename=" + Server.UrlEncode(filename);
        }
        Response.AddHeader("content-disposition", attachment);
        Response.Write("<meta http-equiv=Content-Type content=text/html;charset=utf-8>");
        Response.ContentType = "application/ms-excel";
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        GridView1.RenderControl(htw);
        Response.Output.Write(sw.ToString());
        Response.Flush();
        Response.End();
    }

    public override void VerifyRenderingInServerForm(Control control)
    {

    }