UploadDataCompletedEventHandler UploadDataCompletedEventHandler UploadDataCompletedEventHandler UploadDataCompletedEventHandler Delegate

Definition

Stellt die Methode zur Behandlung des UploadDataCompleted-Ereignisses eines WebClient-Objekts dar.Represents the method that will handle the UploadDataCompleted event of a WebClient.

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

Parameter

sender
Object Object Object Object

Die Quelle des Ereignisses.The source of the event.

Vererbung
UploadDataCompletedEventHandlerUploadDataCompletedEventHandlerUploadDataCompletedEventHandlerUploadDataCompletedEventHandler

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, asynchron Hochladen von Daten.The following code example demonstrates asynchronously uploading data.

void UploadDataInBackground2( String^ address )
{
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);
   String^ text = "Time = 12:00am temperature = 50";
   array<Byte>^data = System::Text::Encoding::UTF8->GetBytes( text );
   String^ method = "POST";

   client->UploadDataCompleted += gcnew UploadDataCompletedEventHandler( UploadDataCallback2 );
   client->UploadDataAsync( uri, method, data );
}


public static void UploadDataInBackground2 (string address)
{
    WebClient client = new WebClient ();
    Uri uri = new Uri(address);
    string text = "Time = 12:00am temperature = 50";
    byte[] data = System.Text.Encoding.UTF8.GetBytes (text);
    string method = "POST";

    client.UploadDataCompleted += new UploadDataCompletedEventHandler (UploadDataCallback2);
    client.UploadDataAsync (uri, method, data);
}

Public Shared Sub UploadDataInBackground2(ByVal address As String)

	Dim client As WebClient = New WebClient()
	Dim text As String = "Time = 12:00am temperature = 50"
	Dim data() As Byte = System.Text.Encoding.UTF8.GetBytes(text)
	Dim method As String = "POST"

	AddHandler client.UploadDataCompleted, AddressOf UploadDataCallback2
	Dim uri as Uri = New Uri(address)
                      client.UploadDataAsync(uri, method, data)
End Sub

Die folgende Methode wird aufgerufen, wenn der Upload abgeschlossen ist.The following method is called when the upload completes.

void UploadDataCallback2( Object^ /*sender*/, UploadDataCompletedEventArgs^ e )
{
   array<Byte>^data = dynamic_cast<array<Byte>^>(e->Result);
   String^ reply = System::Text::Encoding::UTF8->GetString( data );
   Console::WriteLine( reply );
}


private static void UploadDataCallback2 (Object sender, UploadDataCompletedEventArgs e)
{
    byte[] data = (byte[])e.Result;
    string reply = System.Text.Encoding.UTF8.GetString (data);

    Console.WriteLine (reply);
}

Private Shared Sub UploadDataCallback2(ByVal sender As Object, ByVal e As UploadDataCompletedEventArgs)

    Dim data() As Byte = CType(e.Result, Byte())
    Dim reply As String = System.Text.Encoding.UTF8.GetString(data)

    Console.WriteLine(reply)
End Sub

Hinweise

Beim Erstellen eines UploadDataCompletedEventHandler-Delegaten bestimmen Sie die Methode für die Ereignisbehandlung.When you create a UploadDataCompletedEventHandler delegate, you identify the method that will handle the event. Um dem Ereignishandler das Ereignis zuzuordnen, fügen Sie dem Ereignis eine Instanz des Delegaten hinzu.To associate the event with your event handler, add an instance of the delegate to the event. Der Ereignishandler wird bei jedem Eintreten des Ereignisses aufgerufen, sofern der Delegat nicht entfernt wird.The event handler is called whenever the event occurs, unless you remove the delegate. Weitere Informationen zu den Ereignishandlerdelegaten, finden Sie unter behandeln und Auslösen von Ereignissen.For more information about event handler delegates, see Handling and Raising Events.

Erweiterungsmethoden

GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate) GetMethodInfo(Delegate)

Ruft ein Objekt ab, das die Methode darstellt, die vom angegebenen Delegaten dargestellt wird.Gets an object that represents the method represented by the specified delegate.

Gilt für: