BerLib.BerEncoding.DecodeGeneralizedTime C# (CSharp) Метод

        public static DateTime DecodeGeneralizedTime(IBerInput input, int length)
        {
            var str = DecodeAsciiString(input, length);
             int year, month, day, hour, minute, second, millisecond;
             var isUtc = false;

             try
             {
            year = int.Parse(str.Substring(0, 4));
            month = int.Parse(str.Substring(4, 2));
            day = int.Parse(str.Substring(6, 2));
            hour = int.Parse(str.Substring(8, 2));
            minute = int.Parse(str.Substring(10, 2));
            second = int.Parse(str.Substring(12, 2));

            var suffix = str.Substring(15);
            if(suffix.EndsWith("Z")) // UTC
            {
               suffix = suffix.Substring(0, suffix.Length - 1);
               isUtc = true;
            }

            millisecond = int.Parse(suffix);

            return new DateTime(year, month, day, hour, minute, second, millisecond, isUtc ? DateTimeKind.Utc : DateTimeKind.Local);
             }
             catch(Exception ex)
             {
            Debug.WriteLine(ex);

            return DateTime.MinValue;
             }
        }

        /// <summary>
        /// Decodes the value of the current TLV as an GeneralizedTime represented
        /// as a DateTime structure.
        /// Throws an exception in case of a format mismatch.
        /// </summary>
        /// <returns>DateTime value containing the GeneralizedTime value of the current TLV.</returns>
        public DateTime GetGeneralizedTime()
        {
            if (IsContainer || Length == 0 || Value == null)
            {
                ThrowError(208, "Invalid GeneralizedTime encoding");
            }

            Debug.Assert(Value != null || Length == 0);
            Debug.Assert(Type == BerType.GeneralizedTime || BerType.IsApplicationDefined(Type));

            var input = new BerMemoryInput(Value);

            return(BerEncoding.DecodeGeneralizedTime(input, Length));
        }