UploadDataCompletedEventHandler UploadDataCompletedEventHandler UploadDataCompletedEventHandler UploadDataCompletedEventHandler Delegate

Definición

Representa el método que controlará el evento UploadDataCompleted de WebClient.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)

Parámetros

sender
Object Object Object Object

Origen del evento.The source of the event.

Herencia
UploadDataCompletedEventHandlerUploadDataCompletedEventHandlerUploadDataCompletedEventHandlerUploadDataCompletedEventHandler

Ejemplos

El ejemplo de código siguiente muestra la carga asincrónica de datos.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

El siguiente método se llama cuando se complete la carga.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

Comentarios

Cuando se crea un delegado UploadDataCompletedEventHandler, se identifica el método que controlará el evento.When you create a UploadDataCompletedEventHandler delegate, you identify the method that will 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.

Extension Methods

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