Using the TraceSwitch class to create a LOG-File

[Spuuky]

Hi,

i have some Problems with the use of the TracListener class. First i will describe my code and at the end I will describe my Problem.

I want to use the TraceSwitch class to write a Log file with variated Path and Directory:

	private static TraceSwitch _traceSwitch = new TraceSwitch("myTraceSwitch","TraceLevel für Log-Ausgabe");

	...
	Trace.WriteLineIf(_traceSwitch.TraceError,"[Error] - Fehlermeldung...");

My App.confi is described in the following part:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
	<system.diagnostics>
		<switches>
			<add name="myTraceSwitch" value="3" />
		</switches>
		<trace autoflush="true" indentsize="3">
			<listeners>
				<add name="MyListener" type="LGT.TraceListenerExt.FileTraceListener,TraceListenerExt"
					initializeData="ARI_LOG" />
			</listeners>
		</trace>
	</system.diagnostics>
</configuration>

The TraceSwitch starts a object of my overlaoded TraceListener class. This class is shown in the following:

using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Messaging;


namespace MTU.LGT.TraceListenerExt
{
	public class FileTraceListener : TextWriterTraceListener
	{
		public FileTraceListener(Stream stream) : base(stream)
		{	
		}

		public FileTraceListener(string fileName) : base(fileName + DateTime.Now.ToString(FileNameSufix))
		{
		}

		public override void WriteLine(string message)
		{
			base.WriteLine(MsgFormatter.FormatMessage(message));
		}

		public override void Write(string message)
		{
			base.Write(MsgFormatter.FormatMessage(message));
		}

		static public string FileNameSufix
		{
			set { _filenameSufix = value; }
			get { return _filenameSufix; }
		}

		static protected string			_filenameSufix = "_yyyy-MM-dd_HH-mm-ss";
		static protected StreamWriter	_writer = null;

		private MessageFormatter	MsgFormatter = new MessageFormatter();
	}
	

	public class MessageFormatter
	{
		public string FormatStringSufix
		{
			set { _formatStringSufix = value; }
			get { return _formatStringSufix; }
		}

		public string FormatStringPrefix
		{
			set { _formatStringPrefix = value; }
			get { return _formatStringPrefix; }
		}

		public string FormatMessage(string message)
		{
			return DateTime.Now.ToString(FormatStringPrefix) + message;
		}

		protected string	_formatStringPrefix = "[yyyy-MM-dd HH:mm:ss] ";
		protected string	_formatStringSufix = "";
	}
}

My Problem ist now:
The TraceSwitch starts the constructor of my TraceListener class and gives them a varaible witch is located in the the APp.conif "initializeData".
Is ther any posiblity to make this initializeData varaible, to make the Name and the Directory of my LOG-File variable, too??

Or do I have to overload a method of the Framework TraceListener calls??


Thanks for any ideas and help!

Spuuky



[Andreas]: Added code tags...