Recurrence - Monthly (examples)

• Mar 18, 2019

Interval	Range

1. An appointment occurs on the 23th day of each month. Ten occurrences are specified.

   iCalendar RFC 2445 Recurrence Rule

   RRULE:FREQ=MONTHLY;COUNT=10;BYMONTHDAY=23
   

   C#

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly;
   apt.RecurrenceInfo.Start = apt.Start;
   apt.RecurrenceInfo.DayNumber = 23;
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.None;
   apt.RecurrenceInfo.Range = RecurrenceRange.OccurrenceCount;
   apt.RecurrenceInfo.OccurrenceCount = 10;
   

   VB.NET

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly
   apt.RecurrenceInfo.Start = apt.Start
   apt.RecurrenceInfo.DayNumber = 11
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.None
   apt.RecurrenceInfo.Range = RecurrenceRange.OccurrenceCount
   apt.RecurrenceInfo.OccurrenceCount = 4
   

2. An appointment occurs on the last Wednesday of the month, every 2 months. The occurrence chain has no end date.

   iCalendar RFC 2445 Recurrence Rule

   RRULE:FREQ=MONTHLY;INTERVAL=2;BYDAY=WE;BYSETPOS=-1
   

   C#

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly;
   apt.RecurrenceInfo.Periodicity = 2;
   apt.RecurrenceInfo.Start = apt.Start;
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.Last;
   apt.RecurrenceInfo.WeekDays = WeekDays.Wednesday;
   apt.RecurrenceInfo.Range = RecurrenceRange.NoEndDate;
   

   VB.NET

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly
   apt.RecurrenceInfo.Periodicity = 2
   apt.RecurrenceInfo.Start = apt.Start
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.Last
   apt.RecurrenceInfo.WeekDays = WeekDays.Wednesday
   apt.RecurrenceInfo.Range = RecurrenceRange.NoEndDate
   

3. An appointment occurs on the first Monday of the month every 3 months. The duration is one year.

   iCalendar RFC 2445 Recurrence Rule

   RRULE:FREQ=MONTHLY;UNTIL=20171103T080000Z;INTERVAL=3;BYDAY=MO;BYSETPOS=1
   

   C#

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly;
   apt.RecurrenceInfo.Periodicity = 3;
   apt.RecurrenceInfo.Start = apt.Start;
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.First;
   apt.RecurrenceInfo.WeekDays = WeekDays.Monday;
   apt.RecurrenceInfo.Range = RecurrenceRange.EndByDate;
   apt.RecurrenceInfo.End = apt.RecurrenceInfo.Start.AddYears(1);
   

   VB.NET

   apt.RecurrenceInfo.Type = RecurrenceType.Monthly
   apt.RecurrenceInfo.Periodicity = 3
   apt.RecurrenceInfo.Start = apt.Start
   apt.RecurrenceInfo.WeekOfMonth = WeekOfMonth.First
   apt.RecurrenceInfo.WeekDays = WeekDays.Monday
   apt.RecurrenceInfo.Range = RecurrenceRange.EndByDate
   apt.RecurrenceInfo.End = apt.RecurrenceInfo.Start.AddYears(1)