protected void btnPDF_Click(object sender, EventArgs e)
        {
            HtmlToPdf converter = new HtmlToPdf();
            string md = Environment.GetFolderPath(Environment.SpecialFolder.Personal);



            // create a new pdf document converting an url
            //string s = Request.RawUrl;
            converter.Options.PdfPageOrientation= PdfPageOrientation.Landscape;
            //converter.Options.WebPageHeight = 5000;
            converter.Options.WebPageWidth = 3000;


            converter.Options.HttpCookies.Add(
     System.Web.Security.FormsAuthentication.FormsCookieName,
      Request.Cookies[FormsAuthentication.FormsCookieName].Value);

            PdfDocument doc = converter.ConvertUrl(Request.Url.AbsoluteUri);


            var guid = Guid.NewGuid();
            doc.Save(md + "\\Sample"+guid+".pdf");
           // doc.Save(Response, false, "Sample" + guid + ".pdf");

            // close pdf document
            doc.Close();
        }