iTextSharp.text.pdf.TextField.CheckRTL C# (CSharp) Метод

        private static bool CheckRTL(String text) {
            if (text == null || text.Length == 0)
                return false;
            char[] cc = text.ToCharArray();
            for (int k = 0; k < cc.Length; ++k) {
                int c = (int)cc[k];
                if (c >= 0x590 && c < 0x0780)
                    return true;
            }
            return false;
        }