iTextSharp.text.pdf.PdfStamper.AddSignature C# (CSharp) Метод

        public PdfFormField AddSignature(String name, int page, float llx, float lly, float urx, float ury)
        {
            PdfAcroForm acroForm = stamper.AcroForm;
            PdfFormField signature = PdfFormField.CreateSignature(stamper);
            acroForm.SetSignatureParams(signature, name, llx, lly, urx, ury);
            acroForm.DrawSignatureAppearences(signature, llx, lly, urx, ury);
            AddAnnotation(signature, page);
            return signature;
        }