When overridden in a derived class, cancels the addition of the specified ScheduleItem.

Moves the view backward to the previous block (e.g. previous week).

When overridden in a derived class, gets a start date that is appropriate for that type of view to display the given date.

Moves the view forward to the next block (e.g. next week).

Raises change notification events required when the view changes to displaying a different date range.

Raises the PropertyChanged event.