C# gridview分頁導出excel

  #region 导出Excel方法
        //导出到Excel按钮
        protected void btnExport_Click(object sender, EventArgs e)
        {
            Export("application/ms-excel", "字段数据.xls");

        } 

   private void Export(string FileType, string FileName)
   {
      //清楚分页
       gridView.AllowPaging = false;
       BindData();  

       Response.Clear();
        Response.Buffer = true;
       //设定输出的字符集
        Response.Charset = "GB2312";
      //解决导出到Excel2007乱码问题
       Response.Write("<meta http-equiv=Content-Type content=text/html;charset=GB2312>");  

        //假定导出的文件名为盘点结果表.xls
        Response.AppendHeader("Content-Disposition", "attachment;filename=" +
                             HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
       //解决导出到Excel2007乱码问题
       Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");  

        //设置导出文件的格式
      Response.ContentType = FileType;
       //关闭ViewState
     this.EnableViewState = false;
     System.IO.StringWriter stringWriter = new System.IO.StringWriter();
      HtmlTextWriter textWriter = new HtmlTextWriter(stringWriter);
      gridView.RenderControl(textWriter);
      //把HTML写回浏览器
       Response.Write(stringWriter.ToString());
       Response.Flush();
      Response.End();
      gridView.AllowPaging = true;//恢复分页
       //为GridView重新绑定数据源
      BindData();  

    }  

    //如果没有下面方法会报错，类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内（导出Excel或Word用）
   public override void VerifyRenderingInServerForm(Control control)
    {

    }
  #endregion