protected void ASPXToPDF1_AfterRender(object sender, System.ComponentModel.CancelEventArgs e)
   {
       e.Cancel = true;

       string fileName = string.Format(
              "Reporte-{0:dd-mm-yyyy-hh-mm-ss}.pdf", now);

       string SaveLocation = string.Format("{0}\\{1}", Server.MapPath("~/HR_PDF/"),
                                               (String)fileName);

       //Cast the Result property to HtmlToPdfResult
       HtmlToPdfResult result = (HtmlToPdfResult)ASPXToPDF1.Result;

       //Get the result document
       PdfDocument doc = result.PdfDocument;

       result.PdfDocument.Save(SaveLocation);

   }

    protected void btnExportarPDF_Click(object sender, ImageClickEventArgs e)
    {

        btnExportarPDF.Visible = false;

        ASPXToPDF1.RenderAsPDF();
       

    }