FileWebResponse.GetResponseStream メソッド

.NET Framework クラス ライブラリ リファレンス

FileWebResponse.GetResponseStream メソッド

ファイル システム リソースからデータ ストリームを返します。

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

Visual Basic (宣言)

Public Overrides Function
 GetResponseStream As Stream

Visual Basic (使用法)

Dim instance As FileWebResponse
Dim returnValue As Stream

returnValue = instance.GetResponseStream

C#

public override Stream GetResponseStream ()

C++

public:
virtual Stream^ GetResponseStream () override

J#

public Stream GetResponseStream ()

JScript

public override function GetResponseStream
 () : Stream

戻り値
ファイル システム リソースからデータを読み取る Stream。

解説

GetResponseStream メソッドは、ファイル システム リソースからデータ ストリームを返します。

メモ
システム リソースの不足を防ぐために、応答ストリームを閉じる必要があります。応答ストリームは、Stream.Close または Close を呼び出して、閉じることができます。

使用例

GetResponseStream メソッドを使用して、ファイル システム リソースからデータ ストリームを返す例を次に示します。

Visual Basic

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()

C#

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();

C++

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();

J#

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();

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
FileWebResponse クラス
FileWebResponse メンバ
System.Net 名前空間