Using the TraceSwitch class to create a LOG-File

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:

Code:

---

        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:

Code:

---

<?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:

Code:

---

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...