protected void Page_Load(object sender, EventArgs e)
        {
            var AspxToPdfOptions = new IronPdf.PdfPrintOptions()
            {
                Header = new IronPdf.SimpleHeaderFooter()
                {
                    CenterText      = "Invoice",
                    DrawDividerLine = false,
                    FontFamily      = "Arial",
                    FontSize        = 12
                },
                Footer = new IronPdf.SimpleHeaderFooter()
                {
                    LeftText        = "{date} - {time}",
                    DrawDividerLine = true,
                    RightText       = "Page {page} of {total-pages}",
                    FontFamily      = "Arial",
                    FontSize        = 11
                },
                PaperSize        = IronPdf.PdfPrintOptions.PdfPaperSize.A4,
                PaperOrientation = IronPdf.PdfPrintOptions.PdfPaperOrientation.Portrait
            };

            IronPdf.AspxToPdf.RenderThisPageAsPdf(IronPdf.AspxToPdf.FileBehavior.InBrowser, "Invoice.pdf", AspxToPdfOptions);
        }
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                int ID  = Convert.ToInt32(Session["ID"].ToString());
                int idd = Convert.ToInt32(Request.QueryString["id"]);


                fillData();
                var AspxToPdfOptions = new IronPdf.PdfPrintOptions()
                {
                    PaperSize        = IronPdf.PdfPrintOptions.PdfPaperSize.A4,
                    PaperOrientation = IronPdf.PdfPrintOptions.PdfPaperOrientation.Landscape
                };
                IronPdf.AspxToPdf.RenderThisPageAsPdf(IronPdf.AspxToPdf.FileBehavior.Attachment, idd + "DropSemester.pdf", AspxToPdfOptions);
            }
        }