UploadStringCompletedEventHandler Delegado

Definición

Representa el método que controlará el evento UploadStringCompleted de 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)

Parámetros

sender
Object

Origen del evento.The source of the event.

e
UploadStringCompletedEventArgs

UploadStringCompletedEventArgs que contiene los datos del evento.A UploadStringCompletedEventArgs containing event data.

Ejemplos

En el ejemplo de código siguiente se muestra la carga asincrónica de una cadena.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

Se llama al método siguiente cuando se completa la carga.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

Comentarios

Cuando se crea un delegado UploadStringCompletedEventHandler, se identifica el método que controlará el evento.When you create a UploadStringCompletedEventHandler 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 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