iTextSharp.text.pdf.BarcodePDF417.Append C# (CSharp) Метод

        private void Append(int inp, int len) {
            StringBuilder sb = new StringBuilder(len+1);
            sb.Append(inp);
            for(int i = sb.Length; i < len; i++) {
                sb.Insert(0, "0");
            }
        
            byte[] bytes = PdfEncodings.ConvertToBytes(sb.ToString(), "cp437");
            NumberCompaction(bytes, 0, bytes.Length);
        }