Notes:
Items in returned array should not be modified, but SetIndividualDatesAndRange should be used.
That property is reset to null on any change of items in CalendarSelectedDates or any change of RangeMin or RangeMax properties.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2