Routed Event

Bubbling & Tunneling

Bubbling: 일반적으로 사용되는 방식, from Child to Parent until Root!

Tunneling: 접두사로 Preview가 붙는 이벤트, from Root to Child.

 

 

더이상 이벤트가 전파되지 않도록 막는 방법

void MyEventHandler(object sender, RoutedEventArgs e)
{
    e.Handled = true;
}

 

Custom Routed Event

MSDN

public class MyButtonSimple: Button
{
    // Create a custom routed event by first registering a RoutedEventID
    // This event uses the bubbling routing strategy
    public static readonly RoutedEvent TapEvent = EventManager.RegisterRoutedEvent(
        "Tap",
        RoutingStrategy.Bubble,
        typeof(RoutedEventHandler),
        typeof(MyButtonSimple));
 
    // Provide CLR accessors for the event
    public event RoutedEventHandler Tap
    {
        add { AddHandler(TapEvent, value); } 
        remove { RemoveHandler(TapEvent, value); }
    }
 
    // This method raises the Tap event
    void RaiseTapEvent()
    {
        var newEventArgs = new RoutedEventArgs(MyButtonSimple.TapEvent);
        RaiseEvent(newEventArgs);
    }
 
    // For demonstration purposes we raise the event when the MyButtonSimple is clicked
    protected override void OnClick()
    {
        RaiseTapEvent();
    }
}