UploadStringCompletedEventHandler Délégué

Définition

Représente la méthode qui gérera l'événement UploadStringCompleted d'un WebClient.Represents the method that will handle the UploadStringCompleted event of a WebClient.

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

Paramètres

sender
Object

Source de l'événement.The source of the event.

e
UploadStringCompletedEventArgs

UploadStringCompletedEventArgs contenant les données d’événement.A UploadStringCompletedEventArgs containing event data.

Héritage
UploadStringCompletedEventHandler

Exemples

L’exemple de code suivant montre le chargement asynchrone d’une chaîne.The following code example demonstrates asynchronously uploading a string.

void UploadStringInBackground2( String^ address )
{
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   String^ data = "Time = 12:00am temperature = 50";

   client->UploadStringCompleted += gcnew UploadStringCompletedEventHandler( UploadStringCallback2 );
   client->UploadStringAsync( uri, data );
}


public static void UploadStringInBackground2 (string address)
{
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);
    string data = "Time = 12:00am temperature = 50";
    client.UploadStringCompleted += new UploadStringCompletedEventHandler (UploadStringCallback2);
    client.UploadStringAsync (uri, data);
}

Public Shared Sub UploadStringInBackground2(ByVal address As String)

    Dim client As WebClient = New WebClient()
    Dim data As String = "Time = 12:00am temperature = 50"
    AddHandler client.UploadStringCompleted, AddressOf UploadStringCallback2
                Dim uri as Uri = New Uri(address)
    client.UploadStringAsync(uri, data)
End Sub

La méthode suivante est appelée lorsque le téléchargement est terminé.The following method is called when the upload completes.

void UploadStringCallback2( Object^ /*sender*/, UploadStringCompletedEventArgs^ e )
{
   String^ reply = dynamic_cast<String^>(e->Result);
   Console::WriteLine( reply );
}


private static void UploadStringCallback2 (Object sender, UploadStringCompletedEventArgs e)
{
        string reply = (string)e.Result;
        Console.WriteLine (reply);
}
Private Shared Sub UploadStringCallback2(ByVal sender As Object, ByVal e As UploadStringCompletedEventArgs)
    Dim reply As String = CStr(e.Result)
    Console.WriteLine(reply)
End Sub

Remarques

Lorsque vous créez un délégué UploadStringCompletedEventHandler, vous identifiez la méthode qui gérera l'événement.When you create a UploadStringCompletedEventHandler delegate, you identify the method that will handle the event. Pour associer l'événement au gestionnaire d'événements, ajoutez une instance du délégué à l'événement.To associate the event with your event handler, add an instance of the delegate to the event. Le gestionnaire d'événements est appelé chaque fois qu'un événement se produit, sauf si vous supprimez le délégué.The event handler is called whenever the event occurs, unless you remove the delegate. Pour plus d’informations sur les délégués de gestionnaires d’événements, consultez gestion et déclenchement d’événements.For more information about event handler delegates, see Handling and Raising Events.

Méthodes d’extension

GetMethodInfo(Delegate)

Obtient un objet qui représente la méthode représentée par le délégué spécifié.Gets an object that represents the method represented by the specified delegate.

S’applique à