/// <summary>
/// Create a time period based on a specified date.
/// </summary>
/// <param name="type">The type of the TimePeriod to create</param>
/// <param name="date">Any date which falls into the desired period</param>
/// <returns>New TimePeriod instance</returns>
public static TimePeriod FromDate(TimePeriodType type, DateTime date)
{
DateTime val;
TimePeriodType baseDateType = type;
if (baseDateType == TimePeriodType.Day)
{
val = date.Date;
}
else if (baseDateType == TimePeriodType.CalendarQuarter)
{
int quarter = (date.Month - 1) / 3;
int month = (quarter * 3) + 1;
val = new DateTime(date.Year, month, 1);
}
else if (baseDateType == TimePeriodType.FiscalQuarter)
{
FiscalQuarter fq = new FiscalQuarter();
val = fq.GetStartDate(fq.GetQuarterForDate(date), date.Year);
}
else if (baseDateType == TimePeriodType.Month)
{
val = new DateTime(date.Year, date.Month, 1);
}
else if (baseDateType == TimePeriodType.Year)
{
val = new DateTime(date.Year, 1, 1);
}
else if (baseDateType == TimePeriodType.Week)
{
val = date;
val.AddDays(-1 * (int)val.DayOfWeek);
}
else
{
throw new ApplicationException("Unknown TimePeriodType: " + type.ToString());
}
return(new TimePeriod(type, val));
}
/// <summary>
/// Returns the index in year of this TimePeriod
/// </summary>
/// <returns></returns>
/// <remarks>The index is zero based.</remarks>
public int GetIndexInYear()
{
int index = 0;
if (periodType == TimePeriodType.Day)
{
index = periodStartDate.DayOfYear;
}
else if (periodType == TimePeriodType.Month)
{
index = periodStartDate.Month;
}
else if (periodType == TimePeriodType.CalendarQuarter)
{
index = ((periodStartDate.Month - 1) / 3) + 1;
}
else if (periodType == TimePeriodType.FiscalQuarter)
{
FiscalQuarter fq = new FiscalQuarter();
index = fq.GetQuarterForDate(periodStartDate);
}
return(index);
}