iTextSharp.text.pdf.PdfFileSpecification.FileExtern C# (CSharp) Method

        public static PdfFileSpecification FileExtern(PdfWriter writer, String filePath) {
            PdfFileSpecification fs = new PdfFileSpecification();
            fs.writer = writer;
            fs.Put(PdfName.F, new PdfString(filePath));
            return fs;
        }