Protected Overrides Sub OnSelectedIndexChanged( _
   ByVal oldIndex As Integer, _
   ByVal newIndex As Integer _
) 

Dim instance As UXRibbonComboBox
Dim oldIndex As Integer
Dim newIndex As Integer
 
instance.OnSelectedIndexChanged(oldIndex, newIndex)

protected override void OnSelectedIndexChanged( 
   int oldIndex,
   int newIndex
)

protected procedure OnSelectedIndexChanged( 
    oldIndex: Integer;
    newIndex: Integer
); override; 

protected override function OnSelectedIndexChanged( 
   oldIndex : int,
   newIndex : int
);

protected: void OnSelectedIndexChanged( 
   int oldIndex,
   int newIndex
) override 

protected:
void OnSelectedIndexChanged( 
   int oldIndex,
   int newIndex
) override