FileWebRequest.GetRequestStream メソッド

.NET Framework クラス ライブラリ リファレンス

FileWebRequest.GetRequestStream メソッド

ファイル システム リソースにデータを書き込む Stream オブジェクトを返します。

名前空間: System.Net
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Overrides Function
 GetRequestStream As Stream

Visual Basic (使用法)

Dim instance As FileWebRequest
Dim returnValue As Stream

returnValue = instance.GetRequestStream

C#

public override Stream GetRequestStream ()

C++

public:
virtual Stream^ GetRequestStream () override

J#

public Stream GetRequestStream ()

JScript

public override function GetRequestStream ()
 : Stream

戻り値
ファイル システム リソースにデータを書き込む Stream。

例外

例外の種類	条件
WebException	要求がタイムアウトしました。

解説

GetRequestStream メソッドは、Stream への同期アクセスを提供します。非同期アクセスでは、BeginGetRequestStream メソッドと EndGetRequestStream メソッドを使用します。

使用例

GetRequestStream メソッドを使用して、ファイルに書き込むために使用するストリーム インスタンスを取得するコード例を次に示します。詳細については、FileWebRequest クラスのトピックを参照してください。

Visual Basic

' 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.")

C#

// 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.");

C++

// 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." );

J#

// 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.");

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
FileWebRequest クラス
FileWebRequest メンバ
System.Net 名前空間
BeginGetRequestStream