ISelectionService.SelectionChanging Olay

Tanım

Ad Alanı:

System.ComponentModel.Design

Bütünleştirilmiş Kod:

System.ComponentModel.TypeConverter.dll

Geçerli seçim değişmek üzere olduğunda gerçekleşir.

public:
 event EventHandler ^ SelectionChanging;

event EventHandler SelectionChanging;

member this.SelectionChanging : EventHandler 

Event SelectionChanging As EventHandler 

Olay Türü

EventHandler

Örnekler

Aşağıdaki örnekte olayın nasıl kullanılacağı gösterilmektedir SelectionChanging .

// Add SelectionChanging event handler to event
m_selectionService->SelectionChanging += gcnew EventHandler( this, &ComponentClass::OnSelectionChanging );

// Add SelectionChanging event handler to event
m_selectionService.SelectionChanging += new EventHandler(OnSelectionChanging);

' Add SelectionChanging event handler to event
AddHandler m_selectionService.SelectionChanging, AddressOf OnSelectionChanging

/* This is the OnSelectionChanging handler method.  This method calls
    OnUserChange to display a message that indicates the name of the
    handler that made the call and the type of the event argument. */
void OnSelectionChanging( Object^ /*sender*/, EventArgs^ args )
{
   OnUserChange( "OnSelectionChanging", args->ToString() );
}

/* This is the OnSelectionChanging handler method.  This method calls
    OnUserChange to display a message that indicates the name of the
    handler that made the call and the type of the event argument. */
private void OnSelectionChanging(object sender, EventArgs args) 
{
    OnUserChange("OnSelectionChanging", args.ToString());
}

' This is the OnSelectionChanging handler method.  This method calls
'   OnUserChange to display a message that indicates the name of the
'   handler that made the call and the type of the event argument. 
 Private Sub OnSelectionChanging(ByVal sender As Object, ByVal args As EventArgs)
    OnUserChange("OnSelectionChanging", args.ToString())
 End Sub

Açıklamalar

Bu olay işleyicisinde gerçekleşen işleme, form tasarımcısının genel performansını önemli ölçüde etkileyebileceğinden, bu olayı işlerken işlemeyi en aza indirin.

Ayrıca bkz.

• SelectionChanged
• EventHandler