从GridView导出到Excel时报错:类型GridView的控件GridView1必须放置在具有runat=server的窗体标记内

 

解决以上问题的办法很简单,只需要在后台代码文件中添加:

 

public override void VerifyRenderingInServerForm(Control control)
    {

    }

附: 导出代码:

                Response.ClearContent();
                Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls");
                HttpContext.Current.Response.Charset = "utf-8";
                Response.ContentType = "application/excel";

                StringWriter sw = new StringWriter();
                HtmlTextWriter htw = new HtmlTextWriter(sw);

                GridView1.RenderControl(htw);
                Response.Write(sw.ToString());
                Response.End();