This class encapsulates the event arguments for the MonthCalendar.DateChanged and DateSelected events. You can retrieve the Start and End date of the new selection from this object. public class DateRangeEventArgs : EventArgs { // Public Constructors public DateRangeEventArgs (DateTime start , DateTime end ); // Public Instance Properties public DateTime End {get; } public DateTime Start {get; } } HierarchySystem.Object System.EventArgs DateRangeEventArgs Passed ToDateRangeEventHandler.{BeginInvoke() , Invoke()} , MonthCalendar.{OnDateChanged() , OnDateSelected()} |