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TextWriterTraceListener::Close Method ()

.NET Framework (current version)
 

Closes the Writer so that it no longer receives tracing or debugging output.

Namespace:   System.Diagnostics
Assembly:  System (in System.dll)

C#
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public:
virtual void Close() override

Calling a Write or WriteLine method after calling Close automatically reopens the stream.

The following example implements a TextWriterTraceListener named myTextListener, which uses a StreamWriter called myOutputWriter to write to a file named TestFile.txt. The example creates the file, stream, and text writer, writes one line of text to the file, and then flushes and closes the stream.

C#
C++
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#using <System.dll>
using namespace System;
using namespace System::IO;
using namespace System::Diagnostics;

void main()
{
   #if defined(TRACE)
   TextWriterTraceListener^ myTextListener = nullptr;

   // Create a file for output named TestFile.txt.
   String^ myFileName = "TestFile.txt";
   StreamWriter^ myOutputWriter = gcnew StreamWriter( myFileName,true );

   // Add a TextWriterTraceListener for the file.
   if ( myOutputWriter )
   {
      myTextListener = gcnew TextWriterTraceListener( myOutputWriter );
      Trace::Listeners->Add( myTextListener );
   }

   // Write trace output to all trace listeners.
   Trace::WriteLine( 
      String::Concat( DateTime::Now.ToString(), " - Trace output" ) );
   if ( myTextListener )
   {
      // Remove and close the file writer/trace listener.
      myTextListener->Flush();
      Trace::Listeners->Remove( myTextListener );
      myTextListener->Close();
   }
   #endif
}

.NET Framework
Available since 1.1
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