PDF filigran ekleme ()

dsurucu

aşağıdaki kodu internette buldum kendime uyarlamaya çalıştım ama dosyayı yine aynı şekilde çıktı veriyor, filigransız olarak hata nerede acaba kaynak kod sayfası " [https://www.pdfsharp.net/wiki/Watermark-sample.ashx ]) "

string watermark = "DENEME";
            // Get an XGraphics object for drawing beneath the existing content.
            PdfDocument destDocument = PdfSharp.Pdf.IO.PdfReader.Open(@"D:\test\cıktı.pdf", PdfSharp.Pdf.IO.PdfDocumentOpenMode.Modify);
            var page = destDocument.Pages[0];
            var gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Append);

            // Get the size (in points) of the text.
            XFont xFontt = new Font(Font.FontFamily, 40, Font.Style, GraphicsUnit.World);
            var size = gfx.MeasureString(watermark,xFontt);

            // Define a rotation transformation at the center of the page.
            gfx.TranslateTransform(page.Width / 2, page.Height / 2);
            gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
            gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);

            // Create a graphical path.
            var path = new XGraphicsPath();

            // Create a string format.
            var format = new XStringFormat();
            format.Alignment = XStringAlignment.Near;
            format.LineAlignment = XLineAlignment.Near;

            // Add the text to the path.
            // AddString is not implemented in PDFsharp Core.
            path.AddString(watermark, xFontt.FontFamily, XFontStyle.BoldItalic, 150,
            new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
                format);

            // Create a dimmed red pen.
            var pen = new XPen(XColor.FromArgb(128, 255, 0, 0), 2);

            // Stroke the outline of the path.
            gfx.DrawPath(pen, path);

            //destDocument.AddPage(gfx.PdfPage);
            destDocument.Save("d:/test/yeni1.pdf");

tkalyoncuoglu

using PdfSharp.Drawing;
using PdfSharp.Pdf;
using PdfSharp.Pdf.IO;
using System.Text;

namespace PdfFiligran
{
    internal class Program
    {
        static void Main(string[] args)
        {
            
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            string watermark = "DENEME";
            PdfDocument destDocument = PdfReader.Open(@"C:\Users\tkaly\Desktop\CV\cıktı.pdf");
            var page = destDocument.Pages[0];
            var gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Append);

          
            XFont xFontt = new XFont("arial", 40.0, XFontStyle.Regular);
            var size = gfx.MeasureString(watermark, xFontt);

            gfx.TranslateTransform(page.Width / 2, page.Height / 2);
            gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
            gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);


            var format = new XStringFormat();
            format.Alignment = XStringAlignment.Near;
            format.LineAlignment = XLineAlignment.Near;

           

            XBrush brush = new XSolidBrush(XColor.FromArgb(128, 255, 0, 0));

            gfx.DrawString(watermark, xFontt, brush,
                new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
                format);

            

       
            destDocument.Save(@"C:\Users\tkaly\Desktop\CV\yeni1.pdf");
        }
    }
}