WPF 自定义依赖属性与路由事件

  //自定义依赖属性

    class MyBook : DependencyObject//依赖属性必须派生自DependencyObject

    {

        public static readonly DependencyProperty BookNameProperty = DependencyProperty.Register("BookName", typeof(string), typeof(MyBook));//依赖属性必须是静态的DependencyObject对象

        public string BookName

        {

            get { return (string)GetValue(BookNameProperty); }

            set { SetValue(BookNameProperty, value); }

        }

 

        static MyBook()//静态构造函数

        {

            //BookNameProperty = DependencyProperty.Register("BookName", typeof(string), typeof(MyBook));

        }

    }

 

 

 

    class MyButton : Button

    {

        //自定义路由事件

        public static readonly RoutedEvent HitEvent = EventManager.RegisterRoutedEvent("Hit", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyButton));

        public event RoutedEventHandler Hit

        {

            add { AddHandler(HitEvent, value); }

            remove { RemoveHandler(HitEvent, value); }

        }

 

        static MyButton()

        {

            //HitEvent = EventManager.RegisterRoutedEvent("Hit", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyButton));

        }

 

        public void RaiseHitEvent()

        {

            RoutedEventArgs routedEventArgs = new RoutedEventArgs(MyButton.HitEvent);

            //UIElement.RaiseEvent(RoutedEventArgs routedEeventArgs)方法

            this.RaiseEvent(routedEventArgs);//触发路由事件方法

        }

 

        //自定义普通事件

        //public delegate void EventHandler(object sender, EventArgs e);

        public event EventHandler SelectingButton;

 

        protected override void OnClick()

        {

            base.OnClick();

 

            RaiseHitEvent();//调用RaiseHitEvent()方法引发路由事件

 

            if (SelectingButton != null)

                SelectingButton(this, null);//调用SelectingButton(this, null)引发普通事件

        }

    }