ComponentChangedEventHandler 대리자

정의

public delegate void ComponentChangedEventHandler(System::Object ^ sender, ComponentChangedEventArgs ^ e);

[System.Runtime.InteropServices.ComVisible(true)]
public delegate void ComponentChangedEventHandler(object sender, ComponentChangedEventArgs e);

public delegate void ComponentChangedEventHandler(object sender, ComponentChangedEventArgs e);

[<System.Runtime.InteropServices.ComVisible(true)>]
type ComponentChangedEventHandler = delegate of obj * ComponentChangedEventArgs -> unit

type ComponentChangedEventHandler = delegate of obj * ComponentChangedEventArgs -> unit

Public Delegate Sub ComponentChangedEventHandler(sender As Object, e As ComponentChangedEventArgs)

매개 변수

특성

ComVisibleAttribute

예제

이 예제에서는 이벤트를 등록 ComponentChangedEventHandler 하고 처리하는 방법을 보여 줍니다 ComponentChanged .

public:
   void LinkComponentChangedEvent( IComponentChangeService^ changeService )
   {
      // Registers an event handler for the ComponentChanged event.
      changeService->ComponentChanged += gcnew ComponentChangedEventHandler(
         this, &ComponentChangedEventHandlerExample::OnComponentChanged );
   }

private:
   void OnComponentChanged( Object^ sender, ComponentChangedEventArgs^ e )
   {
      // Displays changed component information on the console.
      Console::WriteLine( "Type of the component that has changed: " +
         e->Component->GetType()->FullName );
      Console::WriteLine( "Name of the member of the component that has changed: " +
         e->Member->Name );
      Console::WriteLine( "Old value of the member: " + e->OldValue );
      Console::WriteLine( "New value of the member: " + e->NewValue );
   }

public void LinkComponentChangedEvent(IComponentChangeService changeService)
{
    // Registers an event handler for the ComponentChanged event.
    changeService.ComponentChanged += new ComponentChangedEventHandler(this.OnComponentChanged);            
}

private void OnComponentChanged(object sender, ComponentChangedEventArgs e)
{
    // Displays changed component information on the console.
    Console.WriteLine("Type of the component that has changed: "+e.Component.GetType().FullName);      
    Console.WriteLine("Name of the member of the component that has changed: "+e.Member.Name);            
    Console.WriteLine("Old value of the member: "+e.OldValue.ToString());
    Console.WriteLine("New value of the member: "+e.NewValue.ToString());
}

Public Sub LinkComponentChangedEvent(ByVal changeService As IComponentChangeService)
    ' Registers an event handler for the ComponentChanged event.
    AddHandler changeService.ComponentChanged, AddressOf Me.OnComponentChanged
End Sub

Private Sub OnComponentChanged(ByVal sender As Object, ByVal e As ComponentChangedEventArgs)
    ' Displays changed component information on the console.            
    Console.WriteLine(("Type of the component that has changed: " + e.Component.GetType().FullName))
    Console.WriteLine(("Name of the member of the component that has changed: " + e.Member.Name))
    Console.WriteLine(("Old value of the member: " + e.OldValue.ToString()))
    Console.WriteLine(("New value of the member: " + e.NewValue.ToString()))
End Sub

설명

대리자를 ComponentChangedEventHandler 만들 때 이벤트를 처리할 메서드를 식별합니다. 이벤트를 이벤트 처리기와 연결하려면 대리자의 인스턴스를 이벤트에 추가합니다. 대리자를 제거하지 않는 한 이벤트가 발생할 때마다 이벤트 처리기가 호출됩니다. 이벤트 처리기 대리에 대한 자세한 내용은 이벤트 처리 및 발생을 참조하세요.

ComponentChanged 이러한 작업 중에 변경이 필요하기 때문에 폼을 로드하거나 언로드하는 동안 이벤트가 발생하지 않습니다.

추가 정보

• ComponentChanged
• ComponentChanging
• ComponentChangedEventArgs
• IComponentChangeService