WebResponse.GetResponseStream Metoda

Definice

Při přepsání v odvozené třídě vrátí datový proud z internetového prostředku.When overridden in a descendant class, returns the data stream from the Internet resource.

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

Návraty

Stream

Instance Stream třídy pro čtení dat z internetového prostředku.An instance of the Stream class for reading data from the Internet resource.

Výjimky

Při každém pokusu o přístup k metodě, pokud metoda není přepsána v odvozené třídě.Any attempt is made to access the method, when the method is not overridden in a descendant class.

Příklady

Následující příklad používá GetResponseStream k vrácení StreamReader instance.The following example uses GetResponseStream to return a StreamReader instance. Malá místní vyrovnávací paměť se používá ke čtení dat z StreamReader výstupů a jejich výstupu do konzoly.A small local buffer is used to read data from the StreamReader and output it to the console.

// 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()

Poznámky

GetResponseStreamMetoda vrátí datový proud z internetového prostředku.The GetResponseStream method returns the data stream from the Internet resource.

Poznámka

Datový proud odpovědi musí být uzavřen, aby nedocházelo k nedostatku systémových prostředků.The response stream must be closed to avoid running out of system resources. Datový proud odpovědi může být uzavřen voláním Stream.Close nebo CloseThe response stream can be closed by calling Stream.Close or Close

Platí pro

Viz také