public static void InitLog(string logFileName)
{
TextWriterTraceListener consoleTraceListener = new TextWriterTraceListener(Console.Out);
Trace.Listeners.Add(consoleTraceListener);
TextWriterTraceListener textWriterTraceListener = new TextWriterTraceListener(logFileName);
Trace.Listeners.Add(textWriterTraceListener);
Trace.AutoFlush = true;
Log.WriteLineIf("Log started.", TraceLevel.Off);
}