FtpWebResponse.Close Método

Definición

Libera los recursos mantenidos por la respuesta.Frees the resources held by the response.

public:
 override void Close();
public override void Close ();
override this.Close : unit -> unit
Public Overrides Sub Close ()

Ejemplos

En el siguiente ejemplo de código se descargan datos de un servidor, se leen los datos de la secuencia de respuesta y, a continuación, se cierra.The following code example downloads data from a server, reads the data from the response stream, and then closes it.

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

   // Get the object used to communicate with the server.
   // Note that the cast to FtpWebRequest is done only
   // for the purposes of illustration. If your application
   // does not set any properties other than those defined in the
   // System.Net.WebRequest class, you can use the following line instead:
   // WebRequest request = WebRequest.Create(serverUri);
   //
   FtpWebRequest^ request = dynamic_cast<FtpWebRequest^>(WebRequest::Create( serverUri ));
   request->Method = WebRequestMethods::Ftp::DownloadFile;
   FtpWebResponse^ response = dynamic_cast<FtpWebResponse^>(request->GetResponse());
   Stream^ responseStream = nullptr;
   StreamReader^ readStream = nullptr;
   StreamWriter^ writeStream = nullptr;
   try
   {
      responseStream = response->GetResponseStream();
      readStream = gcnew StreamReader( responseStream,System::Text::Encoding::UTF8 );
      
      // Display information about the data received from the server.
      Console::WriteLine( "Bytes received: {0}", response->ContentLength );
      Console::WriteLine( "Message from server: {0}", response->StatusDescription );
      Console::WriteLine( "Resource: {0}", response->ResponseUri );

      // Write the bytes received from the server to the local file.
      if ( readStream != nullptr )
      {
         writeStream = gcnew StreamWriter( localFileName,false );
         writeStream->Write( readStream->ReadToEnd() );
      }
   }
   finally
   {
      if ( readStream != nullptr )
      {
         readStream->Close();
      }

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

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

   return true;
}
public static bool DownloadFileFromServer(Uri serverUri, string localFileName)
{
    // The serverUri parameter should start with the ftp:// scheme.
    if (serverUri.Scheme != Uri.UriSchemeFtp)
    {
        return false;
    }
    // Get the object used to communicate with the server.
    // Note that the cast to FtpWebRequest is done only
    // for the purposes of illustration. If your application
    // does not set any properties other than those defined in the
    // System.Net.WebRequest class, you can use the following line instead:
    // WebRequest request = WebRequest.Create(serverUri);
    //
    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
    request.Method = WebRequestMethods.Ftp.DownloadFile;

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

    Stream responseStream = null;
    StreamReader readStream = null;
    StreamWriter writeStream = null;
    try
    {
        responseStream = response.GetResponseStream();
        readStream = new StreamReader(responseStream, System.Text.Encoding.UTF8);
        // Display information about the data received from the server.
        Console.WriteLine("Bytes received: {0}",response.ContentLength);

        Console.WriteLine("Message from server: {0}", response.StatusDescription);
        Console.WriteLine("Resource: {0}", response.ResponseUri);

        // Write the bytes received from the server to the local file.
        if (readStream != null)
        {
            writeStream = new StreamWriter(localFileName, false);
            writeStream.Write(readStream.ReadToEnd());
        }
    }
    finally
    {
        if (readStream != null)
        {
            readStream.Close();
        }
        if (response != null)
        {
            response.Close();
        }
        if (writeStream != null)
        {
            writeStream.Close();
        }
    }
    return true;
}

Comentarios

El Close método cierra el flujo de datos devuelto por el GetResponseStream método si la KeepAlive propiedad es false .The Close method closes the data stream returned by the GetResponseStream method if the KeepAlive property is false. Durante el cierre, los datos se pueden enviar al servidor en la conexión de control.During the close, data might be sent to the server on the control connection.

Nota

Este miembro genera información de seguimiento cuando se habilita el seguimiento de red en la aplicación.This member outputs trace information when you enable network tracing in your application. Para obtener más información, consulte seguimiento de red en el .NET Framework.For more information, see Network Tracing in the .NET Framework.

Se aplica a

Consulte también