DoWorkEventArgs.Result Propriété

public:
 property System::Object ^ Result { System::Object ^ get(); void set(System::Object ^ value); };

public object Result { get; set; }

public object? Result { get; set; }

member this.Result : obj with get, set

Public Property Result As Object

Valeur de propriété

Object qui représente le résultat d'une opération asynchrone.

Exemples

L’exemple de code suivant montre comment utiliser la DoWorkEventArgs classe pour gérer l’événement DoWork . Pour obtenir une liste de code complète, consultez Guide pratique pour exécuter une opération en arrière-plan.

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    // Do not access the form's BackgroundWorker reference directly.
    // Instead, use the reference provided by the sender parameter.
    BackgroundWorker bw = sender as BackgroundWorker;

    // Extract the argument.
    int arg = (int)e.Argument;

    // Start the time-consuming operation.
    e.Result = TimeConsumingOperation(bw, arg);

    // If the operation was canceled by the user, 
    // set the DoWorkEventArgs.Cancel property to true.
    if (bw.CancellationPending)
    {
        e.Cancel = true;
    }
}

Private Sub backgroundWorker1_DoWork( _
sender As Object, e As DoWorkEventArgs) _
Handles backgroundWorker1.DoWork

   ' Do not access the form's BackgroundWorker reference directly.
   ' Instead, use the reference provided by the sender parameter.
   Dim bw As BackgroundWorker = CType( sender, BackgroundWorker )
   
   ' Extract the argument.
   Dim arg As Integer = Fix(e.Argument)
   
   ' Start the time-consuming operation.
   e.Result = TimeConsumingOperation(bw, arg)
   
   ' If the operation was canceled by the user, 
   ' set the DoWorkEventArgs.Cancel property to true.
   If bw.CancellationPending Then
      e.Cancel = True
   End If

End Sub

S’applique à

Voir aussi

• BackgroundWorker
• Procédure : exécuter une opération en arrière-plan