Issue writing to single file in Web service in .NET

Question

I have created a webservice in .net 2.0, C#. I need to log some information to a file whenever different methods are called by the web service clients.

The problem

Answer 1

To know what I am trying to do in my code, following is the singletone class I have implemented in C#

public sealed class FileWriteTest {

private static volatile FileWriteTest instance;

private static object syncRoot = new Object();

private static Queue logMessages = new Queue();

private static ErrorLogger oNetLogger = new ErrorLogger();

private FileWriteTest() { }

public static FileWriteTest Instance
{
    get
    {
        if (instance == null)
        {
            lock (syncRoot)
            {
                if (instance == null)
                {
                    instance = new FileWriteTest();
                    Thread MyThread = new Thread(new ThreadStart(StartCollectingLogs));
                    MyThread.Start();

                }
            }
        }

        return instance;
    }
}

private static void StartCollectingLogs()
{

    //Infinite loop
    while (true)
    {
        cdoLogMessage objMessage = new cdoLogMessage();
        if (logMessages.Count != 0)
        {
            objMessage = (cdoLogMessage)logMessages.Dequeue();
            oNetLogger.WriteLog(objMessage.LogText, objMessage.SeverityLevel);

        }
    }
}

public void WriteLog(string logText, SeverityLevel errorSeverity)
{
    cdoLogMessage objMessage = new cdoLogMessage();
    objMessage.LogText = logText;
    objMessage.SeverityLevel = errorSeverity;
    logMessages.Enqueue(objMessage);

}

}

When I run this code in debug mode (simulates just one user access), I get the error "stack overflow" at the line where queue is dequeued.

Note: In the above code ErrorLogger is a class that has code to write to the File. objMessage is an entity class to carry the log message.