WebClient.UploadFileCompleted Evento

Definición

Espacio de nombres:

System.Net

Ensamblado:

System.Net.WebClient.dll

Source:

WebClient.cs

Se produce cuando se completa una operación asincrónica de carga de archivos.

public:
 event System::Net::UploadFileCompletedEventHandler ^ UploadFileCompleted;

public event System.Net.UploadFileCompletedEventHandler? UploadFileCompleted;

member this.UploadFileCompleted : System.Net.UploadFileCompletedEventHandler 

Public Custom Event UploadFileCompleted As UploadFileCompletedEventHandler 

Tipo de evento

UploadFileCompletedEventHandler

Ejemplos

En el ejemplo de código siguiente se muestra cómo establecer un controlador de eventos para este evento.

// Sample call: UploadFileInBackground2("http://www.contoso.com/fileUpload.aspx", "data.txt")
void UploadFileInBackground2( String^ address, String^ fileName )
{
   WebClient^ client = gcnew WebClient;
   Uri ^uri = gcnew Uri(address);

   client->UploadFileCompleted +=
     gcnew UploadFileCompletedEventHandler (UploadFileCallback2);

   // Specify a progress notification handler.
   client->UploadProgressChanged +=
       gcnew UploadProgressChangedEventHandler( UploadProgressCallback );
   client->UploadFileAsync( uri, "POST", fileName );
   Console::WriteLine( "File upload started." );
}

// Sample call: UploadFileInBackground2("http://www.contoso.com/fileUpload.aspx", "data.txt")
public static void UploadFileInBackground2(string address, string fileName)
{
    WebClient client = new WebClient();
    Uri uri = new Uri(address);

    client.UploadFileCompleted += new UploadFileCompletedEventHandler(UploadFileCallback2);

    // Specify a progress notification handler.
    client.UploadProgressChanged += new UploadProgressChangedEventHandler(UploadProgressCallback);
    client.UploadFileAsync(uri, "POST", fileName);
    Console.WriteLine("File upload started.");
}

'  Sample call: UploadFileInBackground2("http:' www.contoso.com/fileUpload.aspx", "data.txt")
Public Shared Sub UploadFileInBackground2(ByVal address As String, ByVal fileName As String)

    Dim client As WebClient = New WebClient()
                Dim uri as Uri =  New Uri(address)
    AddHandler client.UploadFileCompleted, AddressOf UploadFileCallback2

    '  Specify a progress notification handler.
    AddHandler client.UploadProgressChanged, AddressOf UploadProgressCallback
    client.UploadFileAsync(uri, "POST", fileName)
    Console.WriteLine("File upload started.")
End Sub

En el ejemplo de código siguiente se muestra una implementación de un controlador para este evento.

void UploadFileCallback2( Object^ /*sender*/, UploadFileCompletedEventArgs^ e )
{
   String^ reply = System::Text::Encoding::UTF8->GetString( e->Result );
   Console::WriteLine( reply );
}

private static void UploadFileCallback2(Object sender, UploadFileCompletedEventArgs e)
{
    string reply = System.Text.Encoding.UTF8.GetString(e.Result);
    Console.WriteLine(reply);
}

Private Shared Sub UploadFileCallback2(ByVal sender As Object, ByVal e As System.Net.UploadFileCompletedEventArgs)

    Dim reply As String = System.Text.Encoding.UTF8.GetString(e.Result)
    Console.WriteLine(reply)
End Sub

Comentarios

Cautela

WebRequest, HttpWebRequest, ServicePointy WebClient están obsoletos y no debe usarlos para el nuevo desarrollo. Use HttpClient en su lugar.

Este evento se genera cada vez que se completa una operación de carga de archivos asincrónica. Las cargas de archivos asincrónicas se inician llamando a los métodos de UploadFileAsync.

El UploadFileCompletedEventHandler es el delegado de este evento. La clase UploadFileCompletedEventArgs proporciona al controlador de eventos datos de eventos.

Para obtener más información sobre cómo controlar eventos, vea Control y generación de eventos.