FtpWebResponse.GetResponseStream Método

Definición

Recupera la secuencia que contiene los datos de respuesta enviados desde un servidor FTP.Retrieves the stream that contains response data sent from an FTP server.

public:
 override System::IO::Stream ^ GetResponseStream();
public override System.IO.Stream GetResponseStream ();
override this.GetResponseStream : unit -> System.IO.Stream
Public Overrides Function GetResponseStream () As Stream

Devoluciones

Stream

Instancia de Stream legible que contiene los datos devueltos con la respuesta; de lo contrario, es Null si el servidor no devuelve datos de respuesta.A readable Stream instance that contains data returned with the response; otherwise, Null if no response data was returned by the server.

Excepciones

La respuesta no devolvió un flujo de datos.The response did not return a data stream.

Ejemplos

En el ejemplo de código siguiente se muestra cómo obtener la secuencia de respuesta de una ListDirectory solicitud.The following code example demonstrates getting the response stream for a ListDirectory request.

static bool ListFilesOnServer( Uri^ serverUri )
{
   // The serverUri should start with the ftp:// scheme.
   if ( serverUri->Scheme != Uri::UriSchemeFtp )
   {
      return false;
   }

   // Get the object used to communicate with the server.
   FtpWebRequest^ request = dynamic_cast<FtpWebRequest^>(WebRequest::Create( serverUri ));
   request->Method = WebRequestMethods::Ftp::ListDirectory;

   // Get the ServicePoint object used for this request, and limit it to one connection.
   // In a real-world application you might use the default number of connections (2),
   // or select a value that works best for your application.
   ServicePoint^ sp = request->ServicePoint;
   Console::WriteLine( "ServicePoint connections = {0}.", sp->ConnectionLimit );
   sp->ConnectionLimit = 1;
   FtpWebResponse^ response = dynamic_cast<FtpWebResponse^>(request->GetResponse());

   // The following streams are used to read the data returned from the server.
   Stream^ responseStream = nullptr;
   StreamReader^ readStream = nullptr;
   try
   {
      responseStream = response->GetResponseStream();
      readStream = gcnew StreamReader( responseStream,System::Text::Encoding::UTF8 );
      if ( readStream != nullptr )
      {
         // Display the data received from the server.
         Console::WriteLine( readStream->ReadToEnd() );
      }

      Console::WriteLine( "List status: {0}", response->StatusDescription );
   }
   finally
   {
      if ( readStream != nullptr )
      {
         readStream->Close();
      }

      if ( response != nullptr )
      {
         response->Close();
      }
   }

   return true;
}
public static bool ListFilesOnServer(Uri serverUri)
{
    // The serverUri should start with the ftp:// scheme.
    if (serverUri.Scheme != Uri.UriSchemeFtp)
    {
        return false;
    }
    // Get the object used to communicate with the server.
    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
    request.Method = WebRequestMethods.Ftp.ListDirectory;

    // Get the ServicePoint object used for this request, and limit it to one connection.
    // In a real-world application you might use the default number of connections (2),
    // or select a value that works best for your application.

    ServicePoint sp = request.ServicePoint;
    Console.WriteLine("ServicePoint connections = {0}.", sp.ConnectionLimit);
    sp.ConnectionLimit = 1;

    FtpWebResponse response = (FtpWebResponse) request.GetResponse();

    // The following streams are used to read the data returned from the server.
    Stream responseStream = null;
    StreamReader readStream = null;
    try
    {
        responseStream = response.GetResponseStream();
        readStream = new StreamReader(responseStream, System.Text.Encoding.UTF8);

        if (readStream != null)
        {
            // Display the data received from the server.
            Console.WriteLine(readStream.ReadToEnd());
        }
        Console.WriteLine("List status: {0}",response.StatusDescription);
    }
    finally
    {
        if (readStream != null)
        {
            readStream.Close();
        }
        if (response != null)
        {
            response.Close();
        }
    }

    return true;
}

Comentarios

Después de leer los datos, debe cerrar la secuencia.After reading the data, you must close the stream. El flujo se cierra automáticamente al cerrar el FtpWebResponse objeto que lo contiene.The stream is automatically closed when you close the FtpWebResponse object that contains it.

Se produce una excepción a menos que el método de solicitud sea DownloadFile o ListDirectory .An exception is thrown unless the request method is DownloadFile or ListDirectory.

Se aplica a

Consulte también