private int GetWeekIndex(DateTime start, DateTime current)
{
DateTime firstWeekStart = CalendarHelper.GetFirstDayOfWeek(start, this.FirstDayOfWeek);
TimeSpan fromStart = current.Subtract(firstWeekStart);
return(fromStart.Days / 7);
}
private static bool MatchDayOrdinalNegative(DateTime date, int dayOrdinal, RecurrenceDays dayOfWeekMask)
{
DateTime currentDate = CalendarHelper.GetEndOfMonth(date.Year, date.Month);
int current = 0;
while (date < currentDate)
{
if (MatchDayOfWeekMask(currentDate, dayOfWeekMask))
{
current--;
}
currentDate = currentDate.AddDays(-1);
}
return(current == dayOrdinal);
}
