Protected Overridable Sub OnTextChanged( _
   ByVal oldText As String, _
   ByVal newText As String _
) 

Dim instance As UXComboBox
Dim oldText As String
Dim newText As String
 
instance.OnTextChanged(oldText, newText)

protected virtual void OnTextChanged( 
   string oldText,
   string newText
)

protected procedure OnTextChanged( 
    oldText: String;
    newText: String
); virtual; 

protected function OnTextChanged( 
   oldText : String,
   newText : String
);

protected: virtual void OnTextChanged( 
   string* oldText,
   string* newText
) 

protected:
virtual void OnTextChanged( 
   String^ oldText,
   String^ newText
)