Public Event ValueChanged As RoutedPropertyChangedEventHandler(Of Double)

Dim instance As UXSliderBarBase
Dim handler As RoutedPropertyChangedEventHandler(Of Double)
 
AddHandler instance.ValueChanged, handler

public event RoutedPropertyChangedEventHandler<double> ValueChanged

public event ValueChanged: RoutedPropertyChangedEventHandler; 

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

public: __event RoutedPropertyChangedEventHandler<double>* ValueChanged

public:
event RoutedPropertyChangedEventHandler<double>^ ValueChanged