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DoWorkEventArgs.Result Vlastnost

Definice

Získá nebo nastaví hodnotu, která představuje výsledek asynchronní operace.

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

Hodnota vlastnosti

Představuje Object výsledek asynchronní operace.

Příklady

Následující příklad kódu ukazuje, jak použít DoWorkEventArgs třídu ke zpracování DoWork události. Úplný výpis kódu najdete v tématu Postupy: Spuštění operace na pozadí.

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

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