WPF Demo18 路由事件

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

using System.Windows;   namespace 路由事件2 {     public class Student     {         ////声明并定义路由事件         //public static readonly RoutedEvent NameChangedEvent =         //    EventManager.RegisterRoutedEvent("NameChanged",         //    RoutingStrategy.Bubble,         //    typeof(RoutedEventHandler),         //    typeof(Student));           private int id;           public int Id         {             get { return id; }             set { id = value; }         }         private string name;           public string Name         {             get { return name; }             set { name = value; }         }     } }

<Window x:Class="路由事件2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid x:Name="testGrid">
        <Button x:Name="btnTest"  Content="ok" Width="80"  Height="75" FontSize="18" Click="btnTest_Click"/>
    </Grid>
</Window>

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

using System.Windows;   namespace 路由事件2 {     /// <summary>     /// MainWindow.xaml 的交互逻辑     /// </summary>     public partial class MainWindow : Window     {         //声明并定义路由事件         public static readonly RoutedEvent NameChangedEvent =             EventManager.RegisterRoutedEvent("NameChanged",             RoutingStrategy.Bubble,             typeof(RoutedEventHandler),             typeof(MainWindow));           public MainWindow()         {             InitializeComponent();               //为grid添加路由事件侦听器             this.testGrid.AddHandler(NameChangedEvent, new RoutedEventHandler(StudentNameChangeEvent));         }           private void btnTest_Click(object sender, RoutedEventArgs e)         {             Student stu = new Student()             {                 Id = 1,                 Name = "name001"             };               stu.Name = "name007";               //准备事件消息并发送路由事件             RoutedEventArgs arg = new RoutedEventArgs(NameChangedEvent, stu);             //RaiseEvent用于触发路由事件             this.btnTest.RaiseEvent(arg);         }           public void StudentNameChangeEvent(object sender, RoutedEventArgs e)         {             MessageBox.Show("Id==" + (e.OriginalSource as Student).Id.ToString()                 + "\n"                 + "name==" + (e.OriginalSource as Student).Name.ToString());         }     } }

 

实例二：

<Window x:Class="路由事件3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid x:Name="testGrid">
        <Button x:Name="btnTest" Content="ok" Width="80" Height="75" FontSize="18" Click="btnTest_Click"/>
    </Grid>
</Window>

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

using System.Windows;   namespace 路由事件3 {     public class Student     {         //声明并定义路由事件         public static readonly RoutedEvent NameChangedEvent = EventManager.RegisterRoutedEvent             ("NameChange",RoutingStrategy.Bubble,typeof(RoutedEventHandler),typeof(Student));           //为界面元素添加路由侦听器         public static void AddNameChangedHandler(DependencyObject d,RoutedEventHandler h)         {             UIElement e = d as UIElement;             if (e != null) e.AddHandler(Student.NameChangedEvent, h);         }           //移除侦听         public static void RemoveNameChangedHandler(DependencyObject d, RoutedEventHandler h)         {             UIElement e = d as UIElement;             if (e != null) e.RemoveHandler(Student.NameChangedEvent, h);         }           private int id;         public int Id         {             get { return id; }             set { id = value; }         }         private string name;         public string Name         {             get { return name; }             set { name = value; }         }     } }     using System.Windows;   namespace 路由事件3 {     /// <summary>     /// MainWindow.xaml 的交互逻辑     /// </summary>     public partial class MainWindow : Window     {         public MainWindow()         {             InitializeComponent();               //为外层Grid添加路由事件侦听器             Student.AddNameChangedHandler(this.testGrid,new RoutedEventHandler(NameChangedEvent));         }           public void NameChangedEvent(object sender,RoutedEventArgs e)         {             MessageBox.Show("Id==" + (e.OriginalSource as Student).Id.ToString()                + "\n"                + "name==" + (e.OriginalSource as Student).Name.ToString());         }           private void btnTest_Click(object sender, RoutedEventArgs e)         {             Student stu = new Student()             {                 Id = 1,                 Name = "001"             };               stu.Name = "002";               //准备事件消息并发送路由事件             RoutedEventArgs arg = new RoutedEventArgs(Student.NameChangedEvent, stu);             this.btnTest.RaiseEvent(arg);         }     } }