ComponentChangingEventHandler ComponentChangingEventHandler ComponentChangingEventHandler ComponentChangingEventHandler Delegate

Definition

Stellt die Methode zur Behandlung eines ComponentChanging-Ereignisses dar.Represents the method that will handle a ComponentChanging event.

public delegate void ComponentChangingEventHandler(System::Object ^ sender, ComponentChangingEventArgs ^ e);
[System.Runtime.InteropServices.ComVisible(true)]
public delegate void ComponentChangingEventHandler(object sender, ComponentChangingEventArgs e);
type ComponentChangingEventHandler = delegate of obj * ComponentChangingEventArgs -> unit
Public Delegate Sub ComponentChangingEventHandler(sender As Object, e As ComponentChangingEventArgs)

Parameter

sender
Object Object Object Object

Die Quelle des Ereignisses.The source of the event.

Vererbung
ComponentChangingEventHandlerComponentChangingEventHandlerComponentChangingEventHandlerComponentChangingEventHandler
Attribute

Beispiele

In diesem Beispiel wird veranschaulicht, registrieren einen ComponentChangingEventHandler und behandeln die ComponentChanging Ereignis.This example demonstrates registering a ComponentChangingEventHandler and handling the ComponentChanging event.

public:
   void LinkComponentChangingEvent( IComponentChangeService^ changeService )
   {
      // Registers an event handler for the ComponentChanging event.
      changeService->ComponentChanging += gcnew ComponentChangingEventHandler(
         this, &ComponentChangingEventHandlerExample::OnComponentChanging );
   }

private:
   void OnComponentChanging( Object^ sender, ComponentChangingEventArgs^ e )
   {
      // Displays changing component information on the console.
      Console::WriteLine( "Type of the component that is about to change: " +
         e->Component->GetType()->FullName );
      Console::WriteLine( "Name of the member of the component that is about to change: " +
         e->Member->Name );
   }
public void LinkComponentChangingEvent(IComponentChangeService changeService)
{
    // Registers an event handler for the ComponentChanging event.
    changeService.ComponentChanging += new ComponentChangingEventHandler(this.OnComponentChanging);            
}

private void OnComponentChanging(object sender, ComponentChangingEventArgs e)
{
    // Displays changing component information on the console.
    Console.WriteLine("Type of the component that is about to change: "+e.Component.GetType().FullName);      
    Console.WriteLine("Name of the member of the component that is about to change: "+e.Member.Name);                        
}
Public Sub LinkComponentChangingEvent(ByVal changeService As IComponentChangeService)
    ' Registers an event handler for the ComponentChanging event.
    AddHandler changeService.ComponentChanging, AddressOf Me.OnComponentChanging
End Sub

Private Sub OnComponentChanging(ByVal sender As Object, ByVal e As ComponentChangingEventArgs)
    ' Displays changing component information on the console.
    Console.WriteLine(("Type of the component that is about to change: " + e.Component.GetType().FullName))
    Console.WriteLine(("Name of the member of the component that is about to change: " + e.Member.Name))
End Sub

Hinweise

Beim Erstellen eines ComponentChangingEventHandler-Delegaten bestimmen Sie die Methode für die Ereignisbehandlung.When you create a ComponentChangingEventHandler delegate, you identify the method that will handle the event. Um dem Ereignishandler das Ereignis zuzuordnen, fügen Sie dem Ereignis eine Instanz des Delegaten hinzu.To associate the event with your event handler, add an instance of the delegate to the event. Der Ereignishandler wird bei jedem Eintreten des Ereignisses aufgerufen, sofern der Delegat nicht entfernt wird.The event handler is called whenever the event occurs, unless you remove the delegate. Weitere Informationen zu den Ereignishandlerdelegaten, finden Sie unter behandeln und Auslösen von Ereignissen.For more information about event-handler delegates, see Handling and Raising Events.

Extension Methods

GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate)

Ruft ein Objekt ab, das die Methode darstellt, die vom angegebenen Delegaten dargestellt wird.Gets an object that represents the method represented by the specified delegate.

Gilt für:

Siehe auch