An appointment (AppointmentItem) is an activity scheduled for a specific time interval. An activity is characterized by its subject, location, category (Label), and description. An appointment can also contain other properties. An appointment's appearance depends on the active view.
An appointment can occur only once in the specified time interval, or be recurring (occurs many times at the same time interval). To identify whether an appointment is recurring, use the AppointmentItem.IsRecurring property.
A recurring appointment can be a base (Pattern) or occurrence. A Pattern appointment contains information about a recurrence. Occurring appointments can be an Occurrence or exception (ChangedOccurrence or DeletedOccurrence). Use the AppointmentItem.Type property to determine the appointment type.
The scheduler provides the following properties and methods to manage appointments: