Public Event SelectionChanged As RoutedEventHandler

Dim instance As ISTextBox
Dim handler As RoutedEventHandler
 
AddHandler instance.SelectionChanged, handler

public event RoutedEventHandler SelectionChanged

public event SelectionChanged: RoutedEventHandler; 

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event RoutedEventHandler* SelectionChanged

public:
event RoutedEventHandler^ SelectionChanged