DoWorkEventArgs.Argument Propiedad

public:
 property System::Object ^ Argument { System::Object ^ get(); };

public object Argument { get; }

public object? Argument { get; }

member this.Argument : obj

Public ReadOnly Property Argument As Object

Valor de propiedad

Objeto Object que representa el argumento de una operación asincrónica.

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar la DoWorkEventArgs clase para controlar el DoWork evento. Para obtener una lista de código completa, vea Cómo: Ejecutar una operación en segundo plano.

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

Se aplica a

Consulte también

• BackgroundWorker
• Cómo: Ejecutar una operación en segundo plano