how to export data in a excel sheet from a datagridview

DataSet ds = new DataSet();
        
        ds = GetData(ID);
        grdGridView.AllowPaging = false;
        grdGridView.PageIndex = 0;
        grdGridView.DataSource = ds.Tables[0];
        grdGridView.DataBind();
        if (grdGridView.Rows.Count > 0)
        {
            grdGridView.GridLines = GridLines.Both;
            Response.Clear();
            Response.AddHeader("content-disposition", "attachment;filename=MyFile.xls");
            Response.Charset = "";
            Response.ContentType = "application/vnd.xls";
            StringWriter stringWrite = new StringWriter();
            HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
            grdGridView.RenderControl(htmlWrite);
            Response.Write(stringWrite.ToString());
            Response.Flush();
            Response.End();
        }