使用Timer定時輸出全部Log，避免重複開關檔案影響效能

TimerLog.cs

using System.Collections.Generic;
using System.IO;
using System.Timers;

namespace Ruyut
{
    public class TimerLog
    {
        private static System.Timers.Timer _timer;
        private static readonly string FileName = "D:\\log.log";

        private static void TimerInit()
        {
            if (_timer == null)
            {
                _timer = new System.Timers.Timer();
                _timer.Interval = 1000;
                _timer.AutoReset = true;
                _timer.Elapsed += new System.Timers.ElapsedEventHandler(Print);
                _timer.Start();
            }
        }

        private static void Print(object sender, ElapsedEventArgs e)
        {
            Print();
        }

        private static Queue<string> _queue = new Queue<string>();

        private static void Print()
        {
            if (_queue.Count == 0) return;

            _timer.Stop();
            using (StreamWriter streamWriter = new StreamWriter(FileName, true))
            {
                for (int i = 0; i < _queue.Count; i++)
                {
                    streamWriter.WriteLine(_queue.Dequeue().ToString());
                }

                streamWriter.Close();
            }

            _timer.Start();
        }

        private static void Write(string logMessage)
        {
            TimerInit();
            _queue.Enqueue(logMessage);
        }
    }
}