StreamWriter Constructor (Stream, Encoding)
Assembly: mscorlib (in mscorlib.dll)
This constructor initializes the Encoding property using the encoding parameter, and the BaseStream property using the stream parameter. For additional information, see Encoding.
If you specify something other than Encoding.Default, the byte order mark (BOM) is written to the file.
Caution |
|---|
| 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 an example of using this method, see the Example section below. The following table lists examples of other typical or related I/O tasks.
| To do this... | See the example in this topic... |
|---|---|
| Create a text file. | |
| Write to a text file. | |
| Read from a text file. | |
| Append text to a file. | |
| Get the size of a file. | |
| Get the attributes of a file. | |
| Set the attributes of a file. | |
| Determine if a file exists. | |
| Read from a binary file. | |
| Write to a binary file. |
The following 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 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Caution