FileWebResponse.GetResponseStream Metodo

Definizione

Spazio dei nomi:

System.Net

Assembly:

System.Net.Requests.dll

Origine:

FileWebResponse.cs

Restituisce il flusso di dati dalla risorsa del file system.

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

public override System.IO.Stream GetResponseStream ();

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

Public Overrides Function GetResponseStream () As Stream

Restituisce

Stream

Stream per la lettura di dati dalla risorsa del file system.

Esempio

Nell'esempio seguente viene usato il GetResponseStream metodo per restituire il flusso di dati dalla risorsa del file system.

Uri^ fileUrl = gcnew Uri( String::Concat( "file://", url ) );
// Create a 'FileWebrequest' Object* with the specified Uri.
FileWebRequest^ myFileWebRequest = (FileWebRequest^)( WebRequest::Create( fileUrl ) );
// Send the 'FileWebRequest' Object* and wait for response.
FileWebResponse^ myFileWebResponse = (FileWebResponse^)( myFileWebRequest->GetResponse() );

// Get the stream Object* associated with the response Object*.
Stream^ receiveStream = myFileWebResponse->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( "\r\nResponse stream received" );

array<Char>^ read = gcnew array<Char>(256);
// Read 256 characters at a time.
int count = readStream->Read( read, 0, 256 );
Console::WriteLine( "File Data...\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 resources of stream Object*.
readStream->Close();
// Release resources of response Object*.
myFileWebResponse->Close();

Uri fileUrl = new Uri("file://"+url);
// Create a 'FileWebrequest' object with the specified Uri.
FileWebRequest myFileWebRequest = (FileWebRequest)WebRequest.Create(fileUrl);
// Send the 'FileWebRequest' object and wait for response.
FileWebResponse myFileWebResponse = (FileWebResponse)myFileWebRequest.GetResponse();

// Get the stream object associated with the response object.
Stream receiveStream = myFileWebResponse.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("\r\nResponse stream received");

Char[] read = new Char[256];
// Read 256 characters at a time.
int count = readStream.Read( read, 0, 256 );
Console.WriteLine("File Data...\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 resources of stream object.
readStream.Close();
// Release resources of response object.
myFileWebResponse.Close();

Dim fileUrl As New Uri("file://" + url)
' Create a 'FileWebrequest' object with the specified Uri .
Dim myFileWebRequest As FileWebRequest = CType(WebRequest.Create(fileUrl), FileWebRequest)
' Send the 'fileWebRequest' and wait for response. 
Dim myFileWebResponse As FileWebResponse = CType(myFileWebRequest.GetResponse(), FileWebResponse)


' CALLING METHOD GetResponseStream will return the stream associated with the response object.
Dim ReceiveStream As Stream = myFileWebResponse.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.Lf + ControlChars.Cr + "Response stream received")

Dim read(256) As [Char]
' Reading 256 characters at a time.    
Dim count As Integer = readStream.Read(read, 0, 256)
Console.WriteLine("File Data..." + 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.
myFileWebResponse.Close()

Commenti

Il GetResponseStream metodo restituisce il flusso di dati dalla risorsa del file system.

Nota

Il flusso di risposta deve essere chiuso per evitare l'esaurimento delle risorse di sistema. Il flusso di risposta può essere chiuso chiamando Stream.Close o Close