WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted WebClient.DownloadDataCompleted Event

Définition

Se produit lors d'une opération asynchrone de téléchargement de données.Occurs when an asynchronous data download operation completes.

public:
 event System::Net::DownloadDataCompletedEventHandler ^ DownloadDataCompleted;
public event System.Net.DownloadDataCompletedEventHandler DownloadDataCompleted;
member this.DownloadDataCompleted : System.Net.DownloadDataCompletedEventHandler 
Public Custom Event DownloadDataCompleted As DownloadDataCompletedEventHandler 

Exemples

L’exemple de code suivant illustre la définition d’un gestionnaire d’événements pour cet événement.The following code example demonstrates setting an event handler for this event.

// Sample call : DownLoadDataInBackground ("http://www.contoso.com/GameScores.html");
void DownloadDataInBackground( String^ address )
{
   System::Threading::AutoResetEvent^ waiter = gcnew System::Threading::AutoResetEvent( false );
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   
   // Specify that the DownloadDataCallback method gets called
   // when the download completes.
   client->DownloadDataCompleted += gcnew DownloadDataCompletedEventHandler( DownloadDataCallback );
   client->DownloadDataAsync( uri, waiter );
   
   // Block the main application thread. Real applications
   // can perform other tasks while waiting for the download to complete.
   waiter->WaitOne();
}


// Sample call : DownLoadDataInBackground ("http://www.contoso.com/GameScores.html");
public static void DownloadDataInBackground (string address)
{
    System.Threading.AutoResetEvent waiter = new System.Threading.AutoResetEvent (false);
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);

    // Specify that the DownloadDataCallback method gets called
    // when the download completes.
    client.DownloadDataCompleted += new DownloadDataCompletedEventHandler (DownloadDataCallback);
    client.DownloadDataAsync (uri, waiter);

    // Block the main application thread. Real applications
    // can perform other tasks while waiting for the download to complete.
    waiter.WaitOne ();
}

'  Sample call : DownLoadDataInBackground ("http:' www.contoso.com/GameScores.html")
Public Shared Sub DownloadDataInBackground(ByVal address As String)

	Dim waiter As System.Threading.AutoResetEvent = New System.Threading.AutoResetEvent(False)
	Dim client As WebClient = New WebClient()

	'  Specify that the DownloadDataCallback method gets called
	'  when the download completes.
	AddHandler client.DownloadDataCompleted, AddressOf DownloadDataCallback
                      Dim uri as Uri = New Uri(address)
	client.DownloadDataAsync(uri, waiter)

	'  Block the main application thread. Real applications
	'  can perform other tasks while waiting for the download to complete.
	waiter.WaitOne()
End Sub

Remarques

Cet événement est déclenché chaque fois une opération de téléchargement asynchrone des données.This event is raised each time an asynchronous data download operation completes. Téléchargements asynchrones de données sont démarrés en appelant le DownloadDataAsync méthodes.Asynchronous data downloads are started by calling the DownloadDataAsync methods.

Le DownloadDataCompletedEventHandler est le délégué de cet événement.The DownloadDataCompletedEventHandler is the delegate for this event. Le DownloadDataCompletedEventArgs classe fournit le Gestionnaire d’événements avec les données d’événement.The DownloadDataCompletedEventArgs class provides the event handler with event data.

Pour plus d’informations sur la façon de gérer les événements, consultez gestion et déclenchement d’événements.For more information about how to handle events, see Handling and Raising Events.

S’applique à