ISelectionService.SelectionChanging Événement

Définition

Espace de noms:

System.ComponentModel.Design

Assembly:

System.ComponentModel.TypeConverter.dll

Se produit lorsque la sélection en cours est sur le point d'être modifiée.

public:
 event EventHandler ^ SelectionChanging;

event EventHandler SelectionChanging;

member this.SelectionChanging : EventHandler 

Event SelectionChanging As EventHandler 

Type d'événement

EventHandler

Exemples

L’exemple suivant montre comment utiliser l’événement 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

Remarques

Réduisez le traitement lors de la gestion de cet événement, car le traitement qui se produit dans ce gestionnaire d’événements peut affecter considérablement les performances globales du concepteur de formulaires.

Voir aussi

• SelectionChanged
• EventHandler