WPF自定义路由事件

public static RoutedEvent RegisterRoutedEvent(string name, RoutingStrategy routingStrategy, Type handlerType, Type ownerType); 

<UserControl x:Class="CustomWpfRouteEvent.RouteEventControl"
             xmlns="Http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlfORMats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             mc:Ignorable="d"
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <Button Height="30" Width="100" Content="调用路由事件" Click="Button_Click"></Button>
    </Grid>
</UserControl>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace CustomWpfRouteEvent
{
    /// <summary>
    /// RouteEventControl.xaml 的交互逻辑
    /// </summary>
    public partial class RouteEventControl : UserControl
    {
        public RouteEventControl()
        {
            InitializeComponent();
        }

        //1、声明并注册路由事件，使用冒泡策略
        public static readonly RoutedEvent MyClientEvent = EventManager.RegisterRoutedEvent("MyClick",
            RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(RouteEventControl));

        //2、通过.NET事件包装路由事件
        public event RoutedEventHandler MyClick
        {
            add
            {
                AddHandler(MyClientEvent, value);
            }
            remove
            {
                RemoveHandler(MyClientEvent, value);
            }
        }

        /// <summary>
        /// 3、使用按钮的单击事件激发路由事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            RoutedEventArgs arg = new RoutedEventArgs();
            arg.RoutedEvent = MyClientEvent;
            RaiseEvent(arg);
        }
    }
}

<Window x:Class="CustomWpfRouteEvent.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:u="clr-namespace:CustomWpfRouteEvent"
        Title="演示自定义路由事件" Height="350" Width="525" WindowStartupLocation="CenterScreen">
    <Grid>
        <u:RouteEventControl MyClick="RouteEventControl_MyClick"></u:RouteEventControl>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace CustomWpfRouteEvent
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void RouteEventControl_MyClick(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("Hello:" + e.Source.ToString());
        }
    }
}