WebResponse.GetResponseStream Methode

Definition

Namespace:

System.Net

Assembly:

System.Net.Requests.dll

Assembly:

System.dll

Assembly:

netstandard.dll

Gibt beim Überschreiben in einer Nachfolgerklasse den Datenstream von der Internetressource zurück.

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

Gibt zurück

Stream

Eine Instanz der Stream-Klasse zum Lesen von Daten aus der Internetressource.

Ausnahmen

NotSupportedException

Es wurde versucht, auf die Methode zuzugreifen, obwohl die Methode in einer Nachfolgerklasse nicht überschrieben wurde.

Beispiele

Im folgenden Beispiel wird GetResponseStream eine StreamReader Instanz zurückgegeben. Ein kleiner lokaler Puffer wird verwendet, um Daten aus der StreamReader Konsole zu lesen und auszugeben.

// 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.
using 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();

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

' Send the 'WebRequest' and wait for response.
Using 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("")
End Using

Hinweise

Die GetResponseStream Methode gibt den Datenstrom aus der Internetressource zurück.

Hinweis

Der Antwortdatenstrom muss geschlossen werden, um das Auslaufen von Systemressourcen zu vermeiden. Der Antwortdatenstrom kann durch Aufrufen Stream.Close oder Close

Siehe auch

• Verwenden von Streams im Netzwerk