以c#实现轻量级的日志管理，着实简单，置一静态类记之：

/// 
    /// 日志管理    /// 
    public static class LogHelper    {        //超过3M则清除        const int MAX_LOG_SIZE = 3 * 1024 * 1024;        public static void Init(string fileName)        {            CheckAndCleanLogFile(fileName);            bool firstWrite = !File.Exists(fileName);            var traceListener = new TimeTextWriterTraceListener(fileName);            //TraceOptions.DateTime，在以Trace.TraceError、Trace.TraceWarning等方式输出信息时，全加入日期信息            traceListener.TraceOutputOptions |= TraceOptions.DateTime;            Trace.Listeners.Add(traceListener);            Trace.AutoFlush = true;            //初始日志            if (firstWrite)                Trace.WriteLine(string.Format("OS Version: {0}", Environment.OSVersion.ToString()));            Trace.WriteLine("\r\n" + new string('-', 64));            Trace.WriteLine(string.Format("Program Start: {0} v{1}", Application.ProductName, Application.ProductVersion));        }        private static void CheckAndCleanLogFile(string fileName)        {            if (!File.Exists(fileName))                return;            try            {                var fi = new FileInfo(fileName);                if (fi.Length > MAX_LOG_SIZE)                    File.Delete(fileName);            }            catch            {            }        }        private class TimeTextWriterTraceListener : TextWriterTraceListener        {            public TimeTextWriterTraceListener(string fileName)                : base(fileName)            {            }            public override void WriteLine(string message)            {                if (string.IsNullOrEmpty(message))                    return;                if ((this.TraceOutputOptions & TraceOptions.DateTime) == TraceOptions.DateTime && !message.Contains("--------"))                    base.Write(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " ");                base.WriteLine(message);            }        }    }

使用方法：

string logFile = Path.ChangeExtension(Process.GetCurrentProcess().MainModule.FileName, ".log");LogHelper.Init(logPath);

那么，程序中所有Trace.xxx输出的信息，就都会被记录下来。