UploadStringCompletedEventHandler Delegar

Definição

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)

Parâmetros

Exemplos

O exemplo de código seguinte demonstra o carregamento assíncrono de uma string.

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

O seguinte método é chamado quando o upload termina.

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

Observações

Quando cria um UploadStringCompletedEventHandler delegado, identifica o método que irá gerir o evento. Para associar o evento ao seu gestor de eventos, adicione uma instância do delegado ao evento. O gestor de eventos é chamado sempre que o evento ocorre, a menos que remova o delegado. Para mais informações sobre os delegados gestores de eventos, consulte Gestão e Levantamento de Eventos.