Gets or sets a value indicating whether the All-Day Area is shown in the Day View, Work Week View, and Week View. This is a dependency property.
true, to show the all-day area; otherwise, false.
The All-Day Area displays the appointments scheduled for the whole day (those with the AppointmentItem.AllDay property set to true) and the appointments which start on one day and finish on another.
If the ShowAllDayArea property is false, then the all-day appointments are shown in time cells.