The new DateSelected event for the MonthCalendar control fires only when a user explicitly selects a date using the mouse. The existing DateChanged event fires whenever a date is changed—when a user selects a date using the mouse, when the date is changed in a script, and when the user uses the arrow keys on the keyboard to move to another date, or the arrows on the control to scroll to another month.

For more information, see the DateSelected event in the PowerScript Reference or the online Help.