WPF自定义RoutedEvent事件示例代码

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引用网友，便于查找所用.....

创建自定义路由事件和应用分为6个步骤：

(1)自定义路由事件参数对象

(2)声明并注册路由事件

(3)为路由事件添加CLR事件包装

(4)创建可以激发路由事件的方法

(5)Xaml（behind code引用）

(6)事件处理

public class MyObjectRoutedEventArgs:RoutedEventArgs{

public MyObjectRoutedEventArgs(RoutedEvent routedEvent, object source) : base(routedEvent, source) { }

public DateTime ClickTime { get; set; }

}

public class MyObject:Button{

//注册实例化路由事件,Bubble\Direct\Tunnel

public static readonly RoutedEvent MyObjectRoutedEvent

　　　　　　　　　　　　　　　　　　=EventManager.RegisterRoutedEvent("OnMyObjectClick",RoutingStrategy.Bubble

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　,typeof(EventHandler<MyObjectRoutedEventArgs>),typeof(MyObject);

//CLR包装

public Event RoutedEventHandler MyObjectAutoSNHandler{

add{this.AddHanler{MyObjectRoutedEvent,value};}

remove{this.RemoveHanler{MyObjectRoutedEvent,value};}}

}

public override OnClick(){

base.OnClick();

MyObjectRoutedEventArgs args=new MyObjectRoutedEventArgs();

args.SerialNumber="生成流水号";

args.Subject="生成主题";

使用RaiseEvent(args)来触发路由事件

this.RaiseEvent(args);

}

5.1 Xaml访问自定义控件与引用自定义事件

<local:MyObject Width="80" Height="25" Background="Blue" MyObjectAutoSNHandler="MyObject_MyObjectAutoSNHandler" />

5.2 通过代码方式，添加监听路由事件

this.ContainerName.AddHandler(MyObject.MyObjectRoutedEvent, new RoutedEventHandler(MyObject_MyObjectAutoSNHandler));

6.事件处理behindcode

void MyObject_MyObjectAutoSNHandler(object sender, MyObjectRoutedEventArgs e)

{

      string sn=e.SerialNumber;

}

 

 

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public static readonly DependencyProperty PageIndexProperty =

    DependencyProperty.Register("PageIndex", typeof(int), typeof(MoonPdfPanel), new UIPropertyMetadata(1));

 

public int PageIndex

{

    get {return (int)GetValue(PageIndexProperty);}

    set { SetValue(PageIndexProperty, value); }

}

 

public static readonly RoutedEvent PageIndexChangedEvent = EventManager.RegisterRoutedEvent("PageIndexChanged", RoutingStrategy.Bubble, typeof(RoutedPropertyChangedEventHandler<int>), typeof(MoonPdfPanel));

 

public event RoutedPropertyChangedEventHandler<int> PageIndexChanged

{

    add { AddHandler(PageIndexChangedEvent, value); }

    remove { RemoveHandler(PageIndexChangedEvent, value); }

}

 

// 触发事件，结尾一定要使用RaiseEvent(args)来触发路由事件。

RoutedPropertyChangedEventArgs<int> args =

        new RoutedPropertyChangedEventArgs<int>(

            val, this.GetCurrentPageNumber(), PageIndexChangedEvent);

    this.RaiseEvent(args);