wpf自定义路由事件

    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.DataContext = new CustomButton();  
        }
        private void Handler_ConditionalClick(object sender, MyRoutedEventArgs e)
        {
            MessageBox.Show(e.RoutedMessage);
        }      
    }
    public class MyRoutedEventArgs : RoutedEventArgs
    { 
        public string RoutedMessage { get; set; }      
        public MyRoutedEventArgs(RoutedEvent routedevent) : base(routedevent){ }
    }
    public class CustomButton : Button
    {       
      //具有浮升
      //策略的路由事件的标识符命名为 Event。 例如，如果事件名为 Tap，则标识符应命名为 TapEvent。
     //具有
     //隧道策略的路由事件的标识符命名为 PreviewEvent。 例如，如果事件名为 Tap，则标识符应命名为 PreviewTapEvent。
                        

        public static readonly RoutedEvent ConditionalClickEvent = EventManager.RegisterRoutedEvent(
            name: "ConditionalClick",
            routingStrategy: RoutingStrategy.Bubble,
            handlerType: typeof(EventHandler<MyRoutedEventArgs>),
            ownerType: typeof(CustomButton));

        // Provide CLR accessors for assigning an event handler. .NET CLR 属性包装
        public event RoutedEventHandler ConditionalClick
        {
            add { AddHandler(ConditionalClickEvent, value); }
            remove { RemoveHandler(ConditionalClickEvent, value); }
        }        
        protected override void OnClick()
        {
             MyRoutedEventArgs routedEventArgs = new MyRoutedEventArgs(routedevent: ConditionalClickEvent) { RoutedMessage="zen"};         
            RaiseEvent(routedEventArgs);
            base.OnClick();
        }
    }

自带事件应用

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