WebResponse.GetResponseStream Метод

Определение

Пространство имен:

System.Net

Сборка:

System.Net.Requests.dll

Сборка:

System.dll

Сборка:

netstandard.dll

При переопределении во вложенном классе возвращает поток данных из этого Интернет-ресурса.

public:
 abstract System::IO::Stream ^ GetResponseStream();

public:
 virtual System::IO::Stream ^ GetResponseStream();

public abstract System.IO.Stream GetResponseStream ();

public virtual System.IO.Stream GetResponseStream ();

abstract member GetResponseStream : unit -> System.IO.Stream

abstract member GetResponseStream : unit -> System.IO.Stream
override this.GetResponseStream : unit -> System.IO.Stream

Public MustOverride Function GetResponseStream () As Stream

Public Overridable Function GetResponseStream () As Stream

Возвращаемое значение

Stream

Экземпляр класса Stream для чтения данных из Интернет-ресурса.

Исключения

NotSupportedException

Если метод не переопределен во вложенном классе, предпринимаются все возможные попытки получить к нему доступ.

Примеры

В следующем примере используется GetResponseStream для возврата экземпляра StreamReader . Небольшой локальный буфер используется для чтения данных из StreamReader консоли и вывода его в консоль.

// Create a 'WebRequest' object with the specified url.
WebRequest^ myWebRequest = WebRequest::Create( "http://www.contoso.com" );

// Send the 'WebRequest' and wait for response.
WebResponse^ myWebResponse = myWebRequest->GetResponse();

// Obtain a 'Stream' object associated with the response object.
Stream^ ReceiveStream = myWebResponse->GetResponseStream();

Encoding^ encode = System::Text::Encoding::GetEncoding( "utf-8" );

// Pipe the stream to a higher level stream reader with the required encoding format.
StreamReader^ readStream = gcnew StreamReader( ReceiveStream,encode );
Console::WriteLine( "\nResponse stream received" );
array<Char>^ read = gcnew array<Char>(256);

// Read 256 charcters at a time.
int count = readStream->Read( read, 0, 256 );
Console::WriteLine( "HTML...\r\n" );

while ( count > 0 )
{
   // Dump the 256 characters on a string and display the string onto the console.
   String^ str = gcnew String( read,0,count );
   Console::Write( str );
   count = readStream->Read( read, 0, 256 );
}

Console::WriteLine( "" );
// Release the resources of stream object.
readStream->Close();

// Release the resources of response object.
myWebResponse->Close();

    // Create a 'WebRequest' object with the specified url. 
 WebRequest myWebRequest = WebRequest.Create("http://www.contoso.com"); 

// Send the 'WebRequest' and wait for response.
WebResponse myWebResponse = myWebRequest.GetResponse(); 

// Obtain a 'Stream' object associated with the response object.
Stream ReceiveStream = myWebResponse.GetResponseStream();
            
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

    // Pipe the stream to a higher level stream reader with the required encoding format. 
 StreamReader readStream = new StreamReader( ReceiveStream, encode );
 Console.WriteLine("\nResponse stream received");
 Char[] read = new Char[256];

    // Read 256 charcters at a time.    
 int count = readStream.Read( read, 0, 256 );
    Console.WriteLine("HTML...\r\n");

while (count > 0) 
{
        // Dump the 256 characters on a string and display the string onto the console.
    String str = new String(read, 0, count);
    Console.Write(str);
    count = readStream.Read(read, 0, 256);
}

   Console.WriteLine("");
 // Release the resources of stream object.
 readStream.Close();

 // Release the resources of response object.
 myWebResponse.Close();

' Create a 'WebRequest' object with the specified url 
Dim myWebRequest As WebRequest = WebRequest.Create("www.contoso.com")

' Send the 'WebRequest' and wait for response.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()

' Call method 'GetResponseStream' to obtain stream associated with the response object
Dim ReceiveStream As Stream = myWebResponse.GetResponseStream()

Dim encode As Encoding = System.Text.Encoding.GetEncoding("utf-8")

' Pipe the stream to a higher level stream reader with the required encoding format.
Dim readStream As New StreamReader(ReceiveStream, encode)
Console.WriteLine(ControlChars.Cr + "Response stream received")
Dim read(256) As [Char]

' Read 256 charcters at a time    .
Dim count As Integer = readStream.Read(read, 0, 256)
Console.WriteLine("HTML..." + ControlChars.Lf + ControlChars.Cr)
While count > 0

    ' Dump the 256 characters on a string and display the string onto the console.
    Dim str As New [String](read, 0, count)
    Console.Write(str)
    count = readStream.Read(read, 0, 256)

End While
Console.WriteLine("")

' Release the resources of stream object.
 readStream.Close()

 ' Release the resources of response object.
myWebResponse.Close()

Комментарии

Метод GetResponseStream возвращает поток данных из интернет-ресурса.

Примечание

Поток ответа должен быть закрыт, чтобы избежать простоя системных ресурсов. Поток ответа можно закрыть, вызвав Stream.Close или Close

См. также раздел

• Использование потоков в сети