Benutzer:MovGP0/WPF/Routed Events
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Routed Events[Bearbeiten | Quelltext bearbeiten]Handling Routed Event[Bearbeiten | Quelltext bearbeiten]<Window (...) ButtonBase.Click="OnWindowClick">
<StackPanel ButtonBase.Click="OnStackPanelClick">
<Button Click="OnButtonClick" Content="Click me" />
</StackPanel>
</Window>
Handling handeled Routing Event[Bearbeiten | Quelltext bearbeiten]public MainWindow()
{
InitializeComponent();
AddHandler(ButtonBase.ClickEvent, newRoutedEventHandler(OnWindowClick), // registering handler globally
handeled: true); // handle handeled events too
}
private void OnButtonClick(object sender, RoutedEventArgs e)
{
e.Handeled = true; // prevents bubbling
}
private void OnWindowClick(object sender, RoutedEventArgs e)
{
}
Custom Routed Event[Bearbeiten | Quelltext bearbeiten]public satic readonly RoutedEvent ClickEvent =
EventManager.RegisterRoutedEvent(nameof(Click), RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyControl));
public event RoutedEventHandler Click
{
add{ AddHandler(ClickEvent, value); }
remove { RemoveHandler(ClickEvent, value); }
}
private void RaiseClickEvent()
{
var args = new RoutedEventArgs(MyControl.ClickEvent);
RaiseEvent(args);
}
Custom MyRoutedEventHandler/RoutedEventArgs[Bearbeiten | Quelltext bearbeiten]public sealed class MyRoutedEventArgs : RoutedEventArgs
{
public MyRoutedEventArgs (RoutedEvent routedEvent, string param) : base(routedEvent)
{
Param = param;
}
public string Param { get; }
}
public delegate void MyRoutedEventHandler(object sender, MyRoutedEventArgs e);
public satic readonly RoutedEvent ClickEvent =
EventManager.RegisterRoutedEvent(nameof(Click), RoutingStrategy.Bubble, typeof(MyRoutedEventHandler), typeof(MyControl));
public event MyRoutedEventHandler Click
{
add{ AddHandler(ClickEvent, value); }
remove { RemoveHandler(ClickEvent, value); }
}
private void RaiseClickEvent()
{
var args = new MyRoutedEventArgs(MyControl.ClickEvent, "Hello World!");
RaiseEvent(args);
}
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