wpf自定义控件中使用自定义事件

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    /// <summary>

    /// 演示用的自定义控件

    /// </summary>

    public class ExtButton : Button

    {

        public ExtButton()

        {

            base.Click += ExtButton_Click;

        }

        private void ExtButton_Click(object sender, RoutedEventArgs e)

        {

            //定义传递参数

            // RoutedPropertyChangedEventArgs<Object> args = new RoutedPropertyChangedEventArgs<Object>("1", "2", ControlLoadOverEvent);

            RoutedEventArgs args2 = new RoutedEventArgs(ControlLoadOverEvent, this);

            //引用自定义路由事件

            this.RaiseEvent(args2);

        }

        /// <summary>

        /// 声明路由事件

        /// 参数:要注册的路由事件名称，路由事件的路由策略，事件处理程序的委托类型(可自定义)，路由事件的所有者类类型

        /// </summary>

        public static readonly RoutedEvent ControlLoadOverEvent = EventManager.RegisterRoutedEvent("ControlLoadOverEvent", RoutingStrategy.Bubble, typeof(RoutedPropertyChangedEventArgs<Object>), typeof(ExtButton));

        /// <summary>

        /// 处理各种路由事件的方法 

        /// </summary>

        public event RoutedEventHandler ControlLoadOver

        {

            //将路由事件添加路由事件处理程序

            add { AddHandler(ControlLoadOverEvent, value); }

            //从路由事件处理程序中移除路由事件

            remove { RemoveHandler(ControlLoadOverEvent, value); }

        }

    }

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            <!--i为System.Windows.Interactivity引用-->

            <ext:ExtButton x:Name="extButton" Content="绑定自定义事件" HorizontalAlignment="Left" Margin="123,10,0,0" VerticalAlignment="Top" Width="95">

                <i:Interaction.Triggers>

                    <i:EventTrigger EventName="ControlLoadOver">

                        <i:InvokeCommandAction Command="{Binding ButtonLoadOverCommand}" CommandParameter="{Binding ElementName=extButton}"></i:InvokeCommandAction>

                    </i:EventTrigger>

                </i:Interaction.Triggers>

            </ext:ExtButton>

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        public DelegateCommand<Object> ButtonLoadOverCommand { get; set; }

        public void ButtonLoadOver(Object obj)

        {

            //这里的参数为自定义控件对象

            ExtButton btn = obj as ExtButton;

            if (btn != null)

            {

                var content = btn.Content;

            }

        }

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        this.extButton.ControlLoadOver += ExtButton_ControlLoadOver;

        private void ExtButton_ControlLoadOver(object sender, RoutedEventArgs e)

        {

            var btn = (Button)e.Source;

            var str = btn.Content;

        }