WebResponse.GetResponseStream Méthode
Important
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En cas de substitution dans une classe dérivée, retourne le flux de données de la ressource Internet.
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.Streamabstract member GetResponseStream : unit -> System.IO.Stream
override this.GetResponseStream : unit -> System.IO.StreamPublic MustOverride Function GetResponseStream () As StreamPublic Overridable Function GetResponseStream () As StreamInstance de la classe Stream pour la lecture de données de la ressource Internet.
Toutes les tentatives possibles sont effectuées pour accéder à la méthode si celle-ci n’est pas substituée dans une classe descendante.
L’exemple suivant utilise GetResponseStream pour retourner une StreamReader instance. Une petite mémoire tampon locale est utilisée pour lire les données du et les StreamReader générer dans la 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.
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
La GetResponseStream méthode retourne le flux de données à partir de la ressource Internet.
Note
Le flux de réponse doit être fermé pour éviter de manquer de ressources système. Le flux de réponse peut être fermé en appelant Stream.Close ou Close
| Produit | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
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