// Create a new MapiCalendar item var calendarItem = new MapiCalendar { Subject = "Weekly Meeting", Location = "Conference Room 1", StartDate = DateTime.Now.Date, EndDate = DateTime.Now.Date.AddHours(1), Organizer = "Kate Crotty", Body = "Discuss project status", Recurrence = new MapiCalendarEventRecurrence { RecurrencePattern = new MapiCalendarWeeklyRecurrencePattern { DayOfWeek = MapiCalendarDayOfWeek.Monday, Period = 1, EndType = MapiCalendarRecurrenceEndType.NeverEnd } } };