StreamWriter.StreamWriter(Stream) Constructor
Assembly: mscorlib (in mscorlib.dll)
This constructor creates a StreamWriter with UTF-8 encoding without a Byte-Order Mark (BOM), so its GetPreamble method returns an empty byte array. The BaseStream property is initialized using the stream parameter.
Caution: |
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| When you compile a set of characters with a particular cultural setting and retrieve those same characters with a different cultural setting, the characters might not be interpretable and could cause an exception to be thrown. |
For a list of common I/O tasks, see Common I/O Tasks.
The following code example demonstrates the StreamWriter constructors.
void CreateTextFile( String^ fileName, String^ textToAdd ) { String^ logFile = String::Concat( DateTime::Now.ToShortDateString() ->Replace( "/", "-" )->Replace( "\\", "-" ), ".log" ); FileStream^ fs = gcnew FileStream( fileName, FileMode::CreateNew, FileAccess::Write, FileShare::None ); StreamWriter^ swFromFile = gcnew StreamWriter( logFile ); swFromFile->Write( textToAdd ); swFromFile->Flush(); swFromFile->Close(); StreamWriter^ swFromFileStream = gcnew StreamWriter( fs ); swFromFileStream->Write( textToAdd ); swFromFileStream->Flush(); swFromFileStream->Close(); StreamWriter^ swFromFileStreamDefaultEnc = gcnew System::IO::StreamWriter( fs, System::Text::Encoding::Default ); swFromFileStreamDefaultEnc->Write( textToAdd ); swFromFileStreamDefaultEnc->Flush(); swFromFileStreamDefaultEnc->Close(); StreamWriter^ swFromFileTrue = gcnew StreamWriter( fileName,true ); swFromFileTrue->Write( textToAdd ); swFromFileTrue->Flush(); swFromFileTrue->Close(); StreamWriter^ swFromFileTrueUTF8Buffer = gcnew StreamWriter( fileName, true, System::Text::Encoding::UTF8, 512 ); swFromFileTrueUTF8Buffer->Write( textToAdd ); swFromFileTrueUTF8Buffer->Flush(); swFromFileTrueUTF8Buffer->Close(); StreamWriter^ swFromFileTrueUTF8 = gcnew StreamWriter( fileName, true, System::Text::Encoding::UTF8 ); swFromFileTrueUTF8->Write( textToAdd ); swFromFileTrueUTF8->Flush(); swFromFileTrueUTF8->Close(); StreamWriter^ swFromFileStreamUTF8Buffer = gcnew StreamWriter( fs, System::Text::Encoding::UTF8, 512 ); swFromFileStreamUTF8Buffer->Write( textToAdd ); swFromFileStreamUTF8Buffer->Flush(); swFromFileStreamUTF8Buffer->Close(); }
public void CreateTextFile(String fileName, String textToAdd)
{
String logFile = DateTime.get_Now().ToShortDateString().
Replace("/", "-").Replace("\\", "-") + ".log";
FileStream fs = new FileStream(fileName, FileMode.CreateNew,
FileAccess.Write, FileShare.None);
StreamWriter swFromFile = new StreamWriter(logFile);
swFromFile.Write(textToAdd);
swFromFile.Flush();
swFromFile.Close();
StreamWriter swFromFileStream = new StreamWriter(fs);
swFromFileStream.Write(textToAdd);
swFromFileStream.Flush();
swFromFileStream.Close();
StreamWriter swFromFileStreamDefaultEnc =
new System.IO.StreamWriter(fs,System.Text.Encoding.get_Default());
swFromFileStreamDefaultEnc.Write(textToAdd);
swFromFileStreamDefaultEnc.Flush();
swFromFileStreamDefaultEnc.Close();
StreamWriter swFromFileTrue = new StreamWriter(fileName, true);
swFromFileTrue.Write(textToAdd);
swFromFileTrue.Flush();
swFromFileTrue.Close();
StreamWriter swFromFileTrueUTF8Buffer = new StreamWriter(fileName,
true, System.Text.Encoding.get_UTF8(), 512);
swFromFileTrueUTF8Buffer.Write(textToAdd);
swFromFileTrueUTF8Buffer.Flush();
swFromFileTrueUTF8Buffer.Close();
StreamWriter swFromFileTrueUTF8 = new StreamWriter(fileName,
true, System.Text.Encoding.get_UTF8());
swFromFileTrueUTF8.Write(textToAdd);
swFromFileTrueUTF8.Flush();
swFromFileTrueUTF8.Close();
StreamWriter swFromFileStreamUTF8Buffer = new StreamWriter(fs,
System.Text.Encoding.get_UTF8(), 512);
swFromFileStreamUTF8Buffer.Write(textToAdd);
swFromFileStreamUTF8Buffer.Flush();
swFromFileStreamUTF8Buffer.Close();
} //CreateTextFile
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.
Caution: