gridview中导出EXCEL功能

protected void Button5_Click(object sender, EventArgs e)

        {

            if (GridView1.Rows.Count > 0)

            {

                //调用导出方法  

              ExportGridViewForUTF8(GridView1,"computer.xls");

            }

            else

            {

              // obo.Common.MessageBox.Show(this, "没有数据可导出，请先查询数据!");

            } 









        }



        /// <summary>  

        /// 重载，否则出现“类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标... ”的错误  

        /// </summary>  

        /// <param name="control"></param>  

        public override void VerifyRenderingInServerForm(Control control)

        {

            //base.VerifyRenderingInServerForm(control);  

        }



        /// <summary>  

        /// 导出方法  

        /// </summary>  

        /// <param name="GridView"></param>  

        /// <param name="filename">保存的文件名称</param>  

        private void ExportGridViewForUTF8(GridView GridView, string filename)

        {



            string attachment = "attachment; filename=" + filename;



            Response.ClearContent();

            Response.Buffer = true;

            Response.AddHeader("content-disposition", attachment);



            Response.Charset = "UTF-8";

            Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");

            Response.ContentType = "application/ms-excel";

            System.IO.StringWriter sw = new System.IO.StringWriter();



            HtmlTextWriter htw = new HtmlTextWriter(sw);

            GridView.RenderControl(htw);



            Response.Output.Write(sw.ToString());

            Response.Flush();

            Response.End();



        }