c#路由事件

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); }
}
 
// 觸發事件，結尾一定要使用RaiseEvent(args)來觸發路由事件。
RoutedPropertyChangedEventArgs<int> args =
        new RoutedPropertyChangedEventArgs<int>(
            val, this.GetCurrentPageNumber(), PageIndexChangedEvent);
    this.RaiseEvent(args);