Argentini.Halide.H3Temporal.DateRange C# (CSharp) 메소드

        public static DateRangeStruct DateRange(DateRangeOptions dateRangeOptions, DateTime relativeDate)
        {
            DateTime[] retValue = { DateTime.Today, DateTime.Today };
            DateTime myDate = relativeDate;

            switch (dateRangeOptions)
            {
                case DateRangeOptions.Week:

                    if(myDate.DayOfWeek > 0) myDate = myDate.AddDays(-1*Convert.ToInt32(myDate.DayOfWeek));

                    retValue[0] = myDate;
                    retValue[1] = myDate.AddDays(6);

                    break;

                case DateRangeOptions.Month:

                    if (myDate.Day > 1) myDate = myDate.AddDays(-1 * (myDate.Day - 1));

                    retValue[0] = myDate;
                    retValue[1] = myDate.AddMonths(1);
                    retValue[1] = retValue[1].AddDays(-1);

                    break;

                case DateRangeOptions.Quarter:

                    if (myDate.Month < 4) retValue[0] = Convert.ToDateTime("1/1/" + myDate.Year.ToString());
                    if (myDate.Month > 3 && myDate.Month < 7) retValue[0] = Convert.ToDateTime("4/1/" + myDate.Year.ToString());
                    if (myDate.Month > 6 && myDate.Month < 10) retValue[0] = Convert.ToDateTime("7/1/" + myDate.Year.ToString());
                    if (myDate.Month > 9) retValue[0] = Convert.ToDateTime("10/1/" + myDate.Year.ToString());

                    retValue[1] = retValue[0].AddMonths(3);
                    retValue[1] = retValue[1].AddDays(-1);

                    break;

                case DateRangeOptions.Year:

                    retValue[0] = Convert.ToDateTime("1/1/" + myDate.Year.ToString());
                    retValue[1] = Convert.ToDateTime("12/31/" + myDate.Year.ToString());

                    break;
            }

            DateRangeStruct retVal;
            retVal.startDate = retValue[0];
            retVal.endDate = retValue[1];

            return retVal;
        }