public static bool IsDayInRange(DateTime source, DateTime target, CalendarViewingMode mode)
{
if (source.Year != target.Year)
{
return(false);
}
if (mode == CalendarViewingMode.Monthly)
{
return((source.Month == target.Month) ? true : false);
}
else if (mode == CalendarViewingMode.Daily)
{
return((source.Day == target.Day) ? true : false);
}
else if (mode == CalendarViewingMode.Weekly)
{
DateTime wkb;
DateTime wke;
FindRangeOfWeek(source, out wkb, out wke);
// or compare them by converting into OADate
return((target >= wkb && target < wke) ? true : false);
}
else
{
return(false); // or throw exception (Invalid CalendarViewingMode)
}
}
public static List <DateTime> FindAllRecurringDate(IEvent target, DateTime ViewingDate, CalendarViewingMode mode)
{
List <DateTime> result = new List <DateTime>();
DateTime rngb = DateTime.MinValue; // beginning of range
DateTime rnge = DateTime.MinValue; // ending of range
RecurringFrequencies rf = target.RecurringFrequency;
switch (mode)
{
case CalendarViewingMode.Monthly:
FindRangeOfMonth(ViewingDate, out rngb, out rnge);
break;
case CalendarViewingMode.Weekly:
FindRangeOfWeek(ViewingDate, out rngb, out rnge);
break;
default:
break;
}
// Target is not a recurring event
if (target.RecurringFrequency == RecurringFrequencies.None)
{
if (target.OriginalBeginningTime > rngb && target.OriginalBeginningTime < rnge)
{
result.Add(target.OriginalBeginningTime);
}
return(result);
}
if (target.ThisDayForwardOnly && target.OriginalBeginningTime > rnge)
{
return(result);
}
DateTime iter = target.ThisDayForwardOnly ? ((target.OriginalBeginningTime > rngb) ? target.OriginalBeginningTime : rngb) : rngb;
for (; iter < rnge; iter = iter.AddDays(1))
{
if (((byte)iter.DayOfWeek.ToCustomWeekday() & (byte)rf) >= 1)
{
result.Add(iter);
}
}
return(result);
}
