DoWorkEventArgs DoWorkEventArgs DoWorkEventArgs DoWorkEventArgs Class

Definition

Proporciona datos para el controlador de eventos DoWork. Provides data for the DoWork event handler.

public ref class DoWorkEventArgs : System::ComponentModel::CancelEventArgs
public class DoWorkEventArgs : System.ComponentModel.CancelEventArgs
type DoWorkEventArgs = class
    inherit CancelEventArgs
Public Class DoWorkEventArgs
Inherits CancelEventArgs
Inheritance

Examples

En el ejemplo de código siguiente se muestra cómo usar el DoWorkEventArgs clase para controlar la DoWork eventos.The following code example demonstrates how to use the DoWorkEventArgs class to handle the DoWork event. Para obtener una lista de código completo, vea Cómo: ejecutar una operación en segundo plano.For a full code listing, see How to: Run an Operation in the Background.

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   

Constructors

DoWorkEventArgs(Object) DoWorkEventArgs(Object) DoWorkEventArgs(Object) DoWorkEventArgs(Object)

Inicializa una nueva instancia de la clase DoWorkEventArgs. Initializes a new instance of the DoWorkEventArgs class.

Properties

Argument Argument Argument Argument

Obtiene un valor que representa el argumento de una operación asincrónica. Gets a value that represents the argument of an asynchronous operation.

Cancel Cancel Cancel Cancel
Result Result Result Result

Obtiene o establece un valor que representa el resultado de una operación asincrónica. Gets or sets a value that represents the result of an asynchronous operation.

Methods

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina si el objeto especificado es igual al objeto actual. Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Sirve como la función hash predeterminada. Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Obtiene el Type de la instancia actual. Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficial del Object actual. Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Devuelve una cadena que representa el objeto actual. Returns a string that represents the current object.

(Inherited from Object)

Applies to

See Also