iTextSharp.text.pdf.PdfStamperImp.SetDuration C# (CSharp) Метод

        internal void SetDuration(int seconds, int page)
        {
            PdfDictionary pg = reader.GetPageN(page);
            if (seconds < 0)
                pg.Remove(PdfName.DUR);
            else
                pg.Put(PdfName.DUR, new PdfNumber(seconds));
            MarkUsed(pg);
        }