Sneha Bisht wrote:

Use This Code: protected void bttbexcel_Click(object sender, EventArgs e) { Response.Clear(); Response.AddHeader("content-disposition", "attachment;filename=FileName.xls"); Response.Charset = ""; Response.ContentType = "application/vnd.xls"; System.IO.StringWriter stringWrite = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter stringWrite); GridView1.RenderControl(htmlWrite); this.EnableViewState = false; GridView1.AllowPaging = false; GridView1.AllowSorting = false; GridView1.Attributes["runat"] = "server"; Response.Write(stringWrite.ToString()); Response.End(); } public override void VerifyRenderingInServerForm(Control control) { }

The Excel is not true excel.