Protected Overridable Sub OnDisplayDateChanged( _
   ByVal oldDate As Nullable(Of Date), _
   ByVal newDate As Nullable(Of Date) _
) 

Dim instance As UXCalendar
Dim oldDate As Nullable(Of Date)
Dim newDate As Nullable(Of Date)
 
instance.OnDisplayDateChanged(oldDate, newDate)

protected virtual void OnDisplayDateChanged( 
   Nullable<DateTime> oldDate,
   Nullable<DateTime> newDate
)

protected procedure OnDisplayDateChanged( 
    oldDate: Nullable;
    newDate: Nullable
); virtual; 

protected function OnDisplayDateChanged( 
   oldDate : Nullable,
   newDate : Nullable
);

protected: virtual void OnDisplayDateChanged( 
   Nullable<DateTime> oldDate,
   Nullable<DateTime> newDate
) 

protected:
virtual void OnDisplayDateChanged( 
   Nullable<DateTime> oldDate,
   Nullable<DateTime> newDate
)