ActiveDesignerEventHandler Temsilci

Tanım

Ad Alanı:

System.ComponentModel.Design

Bütünleştirilmiş Kodlar:

netstandard.dll, System.ComponentModel.TypeConverter.dll

Kaynak:

ActiveDocumentEventHandler.cs

Olayı işleyecek ActiveDesignerChanged yöntemi temsil eder.

public delegate void ActiveDesignerEventHandler(System::Object ^ sender, ActiveDesignerEventArgs ^ e);

public delegate void ActiveDesignerEventHandler(object? sender, ActiveDesignerEventArgs e);

type ActiveDesignerEventHandler = delegate of obj * ActiveDesignerEventArgs -> unit

Public Delegate Sub ActiveDesignerEventHandler(sender As Object, e As ActiveDesignerEventArgs)

Parametreler

sender

Object

Olayın kaynağı.

e

ActiveDesignerEventArgs

ActiveDesignerEventArgs Olay verilerini içeren bir.

Örnekler

Aşağıdaki örnek, bir kaydetmeyi ve bir ActiveDesignerEventHandlerActiveDesignerChanged olayı işlemeyi gösterir.

public:
   void LinkActiveDesignerEvent( IDesignerEventService^ eventService )
   {
      // Registers an event handler for the ActiveDesignerChanged event.
      eventService->ActiveDesignerChanged += gcnew ActiveDesignerEventHandler( this, &MiscCompModSamples::ActiveDesignerEventHandlerExample::OnActiveDesignerEvent );
   }

private:
   void OnActiveDesignerEvent( Object^ /*sender*/, ActiveDesignerEventArgs^ e )
   {
      // Displays changed designer information on the console.
      if ( e->NewDesigner->RootComponent->Site != nullptr )
      {
         Console::WriteLine( "Name of the component of the new active designer: {0}", e->NewDesigner->RootComponent->Site->Name );
      }
      Console::WriteLine( "Type of the component of the new active designer: {0}", e->NewDesigner->RootComponentClassName );
      if ( e->OldDesigner->RootComponent->Site != nullptr )
      {
         Console::WriteLine( "Name of the component of the previously active designer: {0}", e->OldDesigner->RootComponent->Site->Name );
      }
      Console::WriteLine( "Type of the component of the previously active designer: {0}", e->OldDesigner->RootComponentClassName );
   }

public void LinkActiveDesignerEvent(IDesignerEventService eventService)
{
    // Registers an event handler for the ActiveDesignerChanged event.
    eventService.ActiveDesignerChanged += new ActiveDesignerEventHandler(this.OnActiveDesignerEvent);
}

private void OnActiveDesignerEvent(object sender, ActiveDesignerEventArgs e)
{
    // Displays changed designer information on the console.
    if( e.NewDesigner.RootComponent.Site != null )
        Console.WriteLine("Name of the component of the new active designer: "+e.NewDesigner.RootComponent.Site.Name);
    Console.WriteLine("Type of the component of the new active designer: "+e.NewDesigner.RootComponentClassName);
    if( e.OldDesigner.RootComponent.Site != null )
        Console.WriteLine("Name of the component of the previously active designer: "+e.OldDesigner.RootComponent.Site.Name);
    Console.WriteLine("Type of the component of the previously active designer: "+e.OldDesigner.RootComponentClassName);
}

Public Sub LinkActiveDesignerEvent(ByVal eventService As IDesignerEventService)
    ' Registers an event handler for the ActiveDesignerChanged event.
    AddHandler eventService.ActiveDesignerChanged, AddressOf Me.OnActiveDesignerEvent
End Sub

Private Sub OnActiveDesignerEvent(ByVal sender As Object, ByVal e As ActiveDesignerEventArgs)
    ' Displays changed designer information on the console.            
    If (e.NewDesigner.RootComponent.Site IsNot Nothing) Then
        Console.WriteLine(("Name of the component of the new active designer: " + e.NewDesigner.RootComponent.Site.Name))
    End If
    Console.WriteLine(("Type of the component of the new active designer: " + e.NewDesigner.RootComponentClassName))
    If (e.OldDesigner.RootComponent.Site IsNot Nothing) Then
        Console.WriteLine(("Name of the component of the previously active designer: " + e.OldDesigner.RootComponent.Site.Name))
    End If
    Console.WriteLine(("Type of the component of the previously active designer: " + e.OldDesigner.RootComponentClassName))
End Sub

Açıklamalar

Olay ActiveDesignerChanged , etkin durumdaki belge değiştirildiğinde oluşturulur.

Bir ActiveDesignerEventHandler temsilci oluşturduğunuzda, olayı işleyecek yöntemi tanımlarsınız. Olayı olay işleyicinizle ilişkilendirmek için, olaya temsilcinin bir örneğini ekleyin. Olay işleyicisi, temsilciyi kaldırmadığınız sürece olay gerçekleştiğinde çağrılır. Olay işleyicisi temsilcileri hakkında daha fazla bilgi için bkz. Olayları İşleme ve Oluşturma.

Uzantı Metotları

Name	Description
GetMethodInfo(Delegate)	Belirtilen temsilci tarafından temsil edilen yöntemi temsil eden bir nesnesi alır.

Ayrıca bkz.

• ActiveDesignerEventArgs
• ActiveDesignerChanged