The EmptyRow setting only affects the days layout in GrapeCity.Windows.InputMan.CalendarMode.Month display mode, and the month displayed should be a February which contains 28 days; the trailing days are the empty week rows.

For example, when control shows Feb, 1998, it has 28 days in this Feb, and there're totally 42 CalendarDayButtons there. So there are 14 trailing CalendarDayButtons which are in the "Empty Rows". When GcDropDownCalendar.EmptyRow set to GrapeCity.Windows.InputMan.EmptyRow.StartEmpty, it will show one "Empty Row" at the beginning (which contains 7 trailing CalendarDayButtons), and another "Empty Row" at the ending (which contains the rest 7 trailing CalendarDayButtons). When GcDropDownCalendar.EmptyRow set to GrapeCity.Windows.InputMan.EmptyRow.AllAtEnd, it will show all the 14 trailing days at the ending, which means the first 28 CalendarDayButtons represent the Feb 1 to Feb 28, and the 2 "Empty Rows" are from Mar 1 to Mar 14.