Public Event CanExecuteChanged As EventHandler

Dim instance As DelegateCommand(Of T)
Dim handler As EventHandler
 
AddHandler instance.CanExecuteChanged, handler

public event EventHandler CanExecuteChanged

public event CanExecuteChanged: EventHandler; 

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

public: __event EventHandler* CanExecuteChanged

public:
event EventHandler^ CanExecuteChanged