QLNet.Period.Period C# (CSharp) Method

        public Period(Frequency f)
        {
            switch (f)
            {
                case Frequency.NoFrequency:
                    _timeUnit = TimeUnit.Days;
                    _length = 0;
                    break;

                case Frequency.Once:
                    _timeUnit = TimeUnit.Years;
                    _length = 0;
                    break;

                case Frequency.Annual:
                    _timeUnit = TimeUnit.Years;
                    _length = 1;
                    break;

                case Frequency.Semiannual:
                case Frequency.EveryFourthMonth:
                case Frequency.Quarterly:
                case Frequency.Bimonthly:
                case Frequency.Monthly:
                    _timeUnit = TimeUnit.Months;
                    _length = 12 / (int)f;
                    break;

                case Frequency.EveryFourthWeek:
                case Frequency.Biweekly:
                case Frequency.Weekly:
                    _timeUnit = TimeUnit.Weeks;
                    _length = 52 / (int)f;
                    break;

                case Frequency.Daily:
                    _timeUnit = TimeUnit.Days;
                    _length = 1;
                    break;

                default:
                    throw new ApplicationException(UnknownFrequency);
            }
        }