public ScheduleGeneratorViewModel()
        {
            //ScheduleGeneratorView
            this.dates_ = new ObservableCollection <DateTime>();

            this.FrequencyEnum_       = Frequency.Quarterly;
            this.BusinessDayConvEnum_ = BusinessDayConvention.ModifiedFollowing;
            this.DateGenEnum_         = DateGeneration.Rule.Backward;
        }
        public ScheduleGeneratorViewModel()
        { 
            //ScheduleGeneratorView
            this.dates_ = new ObservableCollection<DateTime>();

            this.FrequencyEnum_ = Frequency.Quarterly;
            this.BusinessDayConvEnum_ = BusinessDayConvention.ModifiedFollowing;
            this.DateGenEnum_ = DateGeneration.Rule.Backward;
        }