//自定義依賴屬性
    class MyBook : DependencyObject//依賴屬性必須派生自DependencyObject
    {
        public static readonly DependencyProperty BookNameProperty = DependencyProperty.Register("BookName", typeof(string), typeof(MyBook));//依賴屬性必須是靜態的DependencyObject對象
        public
 
 string BookName
        {
            get { return (string)GetValue(BookNameProperty); }
            set { SetValue(BookNameProperty, value); }
        }

        static MyBook()//靜態構造函數
        {
            //BookNameProperty = DependencyProperty.Register("BookName", typeof(string), typeof(MyBook));
 

        }
    }

/*
 定義、註冊、包裝路由事件

WPF事件模型與WPF屬性模型類似，與依賴項屬性一樣，路由事件由只讀的靜態字段表示，在靜態構造函數中註冊，並且通過一個標準的.NET事件定義進行包裝*/

class MyButton : Button
    {
        //自定義路由事件
        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 RaiseRoutedEvent()
        {
            RoutedEventArgs routedEventArgs = new RoutedEventArgs(MyButton.HitEvent);
            //UIElement.RaiseEvent(RoutedEventArgs routedEeventArgs)方法
            this.RaiseEvent(routedEventArgs);//觸發路由事件方法
        }

        //自定義普通事件
        //public delegate void EventHandler(object sender, EventArgs e);
        public event EventHandler SelectingButton;

        protected override void OnClick()
        {
            base.OnClick();

            RaiseRoutedEvent();//調用RaiseRoutedEvent()方法引發路由事件

            if (SelectingButton != null)
                SelectingButton(this, null);//調用SelectingButton(this, null)引發普通事件
        }
    }

自定義 DependencyProperty 與 RoutedEvent