ProgressChangedEventHandler Delegado

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

Origen del evento.The source of the event.

e
ProgressChangedEventArgs

Objeto ProgressChangedEventArgs que contiene los datos del evento.A ProgressChangedEventArgs that contains the event data.

Herencia
ProgressChangedEventHandler

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 grande de BackgroundWorker la 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 se crea un ProgressChangedEventHandler delegado, se 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 controladores de eventos, vea controlar y provocar eventos.For more information about event handler delegates, see Handling and Raising Events.

Métodos de extensión

GetMethodInfo(Delegate)

Obtiene un objeto que representa el método representado por el delegado especificado.Gets an object that represents the method represented by the specified delegate.

Se aplica a