Public Event BindingValidationError As EventHandler(Of ValidationErrorEventArgs)

Dim instance As UXFrame
Dim handler As EventHandler(Of ValidationErrorEventArgs)
 
AddHandler instance.BindingValidationError, handler

public event EventHandler<ValidationErrorEventArgs> BindingValidationError

public event BindingValidationError: EventHandler; 

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

public: __event EventHandler<ValidationErrorEventArgs*>* BindingValidationError

public:
event EventHandler<ValidationErrorEventArgs^>^ BindingValidationError