Folder.GetCalendarExporter Method (Outlook)
The GetCalendarExporter method automatically sets the defaults for the CalendarSharing class to the standard default options used by the Folder object. The GetCalendarExporter method can only be used on calendar folders. An error occurs if you use the method on Folder objects that represent other folder types.
The CalendarSharing object only supports exporting the iCalendar (.ics) file format.