ProgressChangedEventHandler ProgressChangedEventHandler ProgressChangedEventHandler ProgressChangedEventHandler Delegate

Definición

Representa el método que controlará el evento ProgressChanged de la clase BackgroundWorker. Represents the method that will handle the ProgressChanged event of the BackgroundWorker class. Esta clase no puede heredarse. This class cannot be inherited.

public delegate void ProgressChangedEventHandler(System::Object ^ sender, ProgressChangedEventArgs ^ e);
public delegate void ProgressChangedEventHandler(object sender, ProgressChangedEventArgs e);
type ProgressChangedEventHandler = delegate of obj * ProgressChangedEventArgs -> unit
Public Delegate Sub ProgressChangedEventHandler(sender As Object, e As ProgressChangedEventArgs)
Parámetros
sender
Object Object Object Object

Origen del evento. The source of the event.

Herencia
ProgressChangedEventHandlerProgressChangedEventHandlerProgressChangedEventHandlerProgressChangedEventHandler

Ejemplos

En el ejemplo de código siguiente se muestra cómo se utiliza la clase ProgressChangedEventHandler.The following code example shows how to use the ProgressChangedEventHandler class. Este ejemplo forma parte de un ejemplo más extenso de la BackgroundWorker clase.This example is part of a larger example for the BackgroundWorker class.

// This event handler updates the progress bar.
void backgroundWorker1_ProgressChanged( Object^ /*sender*/, ProgressChangedEventArgs^ e )
{
   this->progressBar1->Value = e->ProgressPercentage;
}
// This event handler updates the progress bar.
private void backgroundWorker1_ProgressChanged(object sender,
    ProgressChangedEventArgs e)
{
    this.progressBar1.Value = e.ProgressPercentage;
}
' This event handler updates the progress bar.
Private Sub backgroundWorker1_ProgressChanged( _
ByVal sender As Object, ByVal e As ProgressChangedEventArgs) _
Handles backgroundWorker1.ProgressChanged

    Me.progressBar1.Value = e.ProgressPercentage

End Sub

Comentarios

Cuando creas un ProgressChangedEventHandler delegado, identifica un método para controlar el evento.When you create a ProgressChangedEventHandler delegate, you identify a method to handle the event. Para asociar el evento al controlador, se debe agregar una instancia del delegado al evento.To associate the event with your event handler, add an instance of the delegate to the event. Siempre que se produce el evento, se llama a su controlador, a menos que se quite el delegado.The event handler is called whenever the event occurs, unless you remove the delegate. Para obtener más información sobre los delegados de controlador de eventos, consulte controlar y provocar eventos.For more information about event handler delegates, see Handling and Raising Events.

Se aplica a