ISelectionService.SelectionChanging Evento

Definición

Espacio de nombres:

System.ComponentModel.Design

Ensamblado:

System.ComponentModel.TypeConverter.dll

Se produce cuando va a cambiar la selección actual.

public:
 event EventHandler ^ SelectionChanging;

event EventHandler SelectionChanging;

member this.SelectionChanging : EventHandler 

Event SelectionChanging As EventHandler 

Tipo de evento

EventHandler

Ejemplos

En el ejemplo siguiente se muestra cómo usar el SelectionChanging evento .

// 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

Comentarios

Minimice el procesamiento al controlar este evento, ya que el procesamiento que se produce dentro de este controlador de eventos puede afectar significativamente al rendimiento general del diseñador de formularios.

Consulte también

• SelectionChanged
• EventHandler