FileWebRequest.GetRequestStream-Methode

Gibt ein Stream-Objekt zum Schreiben von Daten in die Dateisystemressource zurück.

Namespace: System.Net
Assembly: System (in system.dll)

Syntax

'Declaration
Public Overrides Function GetRequestStream As Stream
'Usage
Dim instance As FileWebRequest
Dim returnValue As Stream

returnValue = instance.GetRequestStream

public override Stream GetRequestStream ()

public:
virtual Stream^ GetRequestStream () override

public Stream GetRequestStream ()

public override function GetRequestStream () : Stream

Rückgabewert

Ein Stream zum Schreiben von Daten in die Dateisystemressource.

Ausnahmen

Ausnahmetyp	Bedingung
WebException	Das Zeitlimit der Anforderung wird erreicht.

Hinweise

Die GetRequestStream-Methode stellt einen synchronen Zugriff auf den Stream bereit. Asynchronen Zugriff erhalten Sie über die BeginGetRequestStream-Methode und die EndGetRequestStream-Methode.

Beispiel

Im folgenden Codebeispiel wird mit der GetRequestStream-Methode eine Streaminstanz zum Schreiben in eine Datei abgerufen. Ein vollständiges Beispiel finden Sie in der FileWebRequest-Klasse.

' Enter the string to write to the file.
Console.WriteLine("Enter the string you want to write:")
Dim userInput As String = Console.ReadLine()

' Convert the string to a byte array.
Dim encoder As New ASCIIEncoding
Dim byteArray As Byte() = encoder.GetBytes(userInput)

' Set the ContentLength property.
myFileWebRequest.ContentLength = byteArray.Length

Dim contentLength As String = myFileWebRequest.ContentLength.ToString()

Console.WriteLine(ControlChars.Lf + "The content length is {0}.", contentLength)


' Get the file stream handler to write to the file.
Dim readStream As Stream = myFileWebRequest.GetRequestStream()

' Write to the stream. 
' Note. For this to work the file must be accessible
' on the network. This can be accomplished by setting the property
' sharing of the folder containg the file.  
' FileWebRequest.Credentials property cannot be used for this purpose.
readStream.Write(byteArray, 0, userInput.Length)


Console.WriteLine(ControlChars.Lf + "The String you entered was successfully written to the file.")

// Enter the string to write to the file.
Console.WriteLine ("Enter the string you want to write:");

string userInput = Console.ReadLine ();

// Convert the string to a byte array.
ASCIIEncoding encoder = new ASCIIEncoding ();
byte[] byteArray = encoder.GetBytes (userInput);

// Set the ContentLength property.
myFileWebRequest.ContentLength = byteArray.Length;

string contentLength = myFileWebRequest.ContentLength.ToString ();

Console.WriteLine ("\nThe content length is {0}.", contentLength);

// Get the file stream handler to write to the file.
Stream readStream = myFileWebRequest.GetRequestStream ();

// Write to the file stream. 
// Note.  For this to work, the file must be accessible
// on the network. This can be accomplished by setting the property
// sharing of the folder containg the file. 
// FileWebRequest.Credentials property cannot be used for this purpose.
readStream.Write (byteArray, 0, userInput.Length);
Console.WriteLine ("\nThe String you entered was successfully written to the file.");

// Enter the string to write into the file.
Console::WriteLine( "Enter the string you want to write:" );
String^ userInput = Console::ReadLine();

// Convert the string to Byte array.
ASCIIEncoding^ encoder = gcnew ASCIIEncoding;
array<Byte>^byteArray = encoder->GetBytes( userInput );

// Set the ContentLength property.
myFileWebRequest->ContentLength = byteArray->Length;
String^ contentLength = myFileWebRequest->ContentLength.ToString();
Console::WriteLine( "\nThe content length is {0}.", contentLength );

// Get the file stream handler to write into the file.
Stream^ readStream = myFileWebRequest->GetRequestStream();

// Write to the file stream.
// Note. In order for this to work the file must be accessible
// on the network. This can be accomplished by setting the property
// sharing of the folder containg the file. The permissions
// can be set so everyone can modify the file.
// FileWebRequest::Credentials property cannot be used for this purpose.
readStream->Write( byteArray, 0, userInput->Length );
Console::WriteLine( "\nThe String you entered was successfully written into the file." );

// Enter the string to write to the file.
Console.WriteLine("Enter the string you want to write:");
String userInput = Console.ReadLine();

// Convert the string to a byte array.
ASCIIEncoding encoder = new ASCIIEncoding();
ubyte byteArray[] = encoder.GetBytes(userInput);

// Set the ContentLength property.
myFileWebRequest.set_ContentLength(byteArray.length);
String contentLength = 
    (new Long(myFileWebRequest.get_ContentLength())).ToString();
Console.WriteLine("\nThe content length is {0}.", contentLength);

// Get the file stream handler to write to the file.
Stream readStream = myFileWebRequest.GetRequestStream();

// Write to the file stream. 
// Note.  For this to work, the file must be accessible
// on the network. This can be accomplished by setting the property
// sharing of the folder containg the file. 
// FileWebRequest.Credentials property cannot be used for 
// this purpose.
readStream.Write(byteArray, 0, userInput.get_Length());
Console.WriteLine("\nThe String you entered was successfully " 
    + "written to the file.");

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

FileWebRequest-Klasse
FileWebRequest-Member
System.Net-Namespace
BeginGetRequestStream