C# 日志记录工具类--LogHelper.cs测试

C# 日志记录工具类：（适用于不想使用log4j等第三方的Log工具的时候，希望自己写个简单类实现）
LogHelper.cs内容如下：

 using System;
 using System.Diagnostics;
 using System.IO;
 using System.Text;
 using System.Threading;
 using System.Collections.Generic;
 
 namespace Tools.Log
 {
     /// <summary>
     /// 多线程安全Log记录工具20180314
     /// </summary>
     public class LogHelper
     {
         //为了使用DBGView进行在线调试：
         //System.Diagnostics.Debug.WriteLine("Debug模式可见")
         //System.Diagnostics.Trace.WriteLine("Debug、Release都可见");
 
         private static  Thread WriteThread;
         private static readonly Queue<string> MsgQueue;
 
         private static readonly string FilePath;
 
         private static Boolean autoResetEventFlag = false;
         private static AutoResetEvent aEvent = new AutoResetEvent(false);
         private static bool flag = true;
         public static bool LogFlag = true;
 
         static LogHelper()
         {
             FilePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "App_Log\\";
             WriteThread = new Thread(WriteMsg);
             MsgQueue = new Queue<string>();
             WriteThread.Start();
         }
 
         public static void LogInfo(string msg)
         {
             Monitor.Enter(MsgQueue);
             MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Info", msg));
             Monitor.Exit(MsgQueue);
             if (autoResetEventFlag) {
                 aEvent.Set();
             }
         }
         public static void LogError(string msg)
         {
             Monitor.Enter(MsgQueue);
             MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Error", msg));
             Monitor.Exit(MsgQueue);
             if (autoResetEventFlag)
             {
                 aEvent.Set();
             }
         }
         public static void LogWarn(string msg)
         {
             Monitor.Enter(MsgQueue);
             MsgQueue.Enqueue(string.Format("{0} {1} {2}", DateTime.Now.ToString("yyyy-MM-dd HH:mm:sss"), "Warn", msg));
             Monitor.Exit(MsgQueue);
             if (autoResetEventFlag)
             {
                 aEvent.Set();
             }
         }
 
         /// <summary>
         /// ExitThread是退出日志记录线程的方法，一旦退出，无法开启，一般在程序关闭时执行
         /// </summary>
         public static void ExitThread() {
             flag = false;
             aEvent.Set();//恢复线程执行
         }
         private static void WriteMsg()
         {
             while (flag)
             {
                 //进行记录
                 if (LogFlag)
                 {
                     autoResetEventFlag = false;
                     if (!Directory.Exists(FilePath))
                     {
                         Directory.CreateDirectory(FilePath);
                     }
                     string fileName = FilePath + DateTime.Now.ToString("yyyy-MM-dd") + "-Dic.log";
                     var logStreamWriter = new StreamWriter(fileName, true);
                     while (MsgQueue.Count > )
                     {
                         Monitor.Enter(MsgQueue);
                         string msg = MsgQueue.Dequeue();
                         Monitor.Exit(MsgQueue);
                         logStreamWriter.WriteLine(msg);
                         if (GetFileSize(fileName) >  * )
                         {
                             logStreamWriter.Flush();
                             logStreamWriter.Close();
                             CopyToBak(fileName);
                             logStreamWriter = new StreamWriter(fileName, false);
                             logStreamWriter.Write("");
                             logStreamWriter.Flush();
                             logStreamWriter.Close();
                             logStreamWriter = new StreamWriter(fileName, true);
                         }
                         //下面用于DbgView.exe工具进行在线调试
                         System.Diagnostics.Debug.WriteLine("BS_Debug:"+msg);
                         System.Diagnostics.Trace.WriteLine("BS_Release:" + msg);
                     }
                     logStreamWriter.Flush();
                     logStreamWriter.Close();
                     autoResetEventFlag = true;
                     aEvent.WaitOne();
                 }
                 else {
                     autoResetEventFlag = true;
                     aEvent.WaitOne();
                 }
             }
         }
         private static long GetFileSize(string fileName)
         {
             long strRe = ;
             if (File.Exists(fileName))
             {
                 var myFs=new FileInfo(fileName);
                 strRe = myFs.Length / ;
                 //Console.WriteLine(strRe);
             }
             return strRe;
         }
         private static void CopyToBak(string sFileName)
         {
             int fileCount = ;
             string sBakName = "";
             do
             {
                 fileCount++;
                 sBakName = sFileName + "." + fileCount + ".BAK";
             }
             while (File.Exists(sBakName));
             File.Copy(sFileName, sBakName);
         }
     }
 }

该类由BS风华改编自网上一个类。实现了多线程下面安全记录日志的功能：

使用方法：

    Tools.Log.LogHelper.LogFlag = true; //开启记录
    Tools.Log.LogHelper.LogInfo("==========日志记录内容 Info====");
    Tools.Log.LogHelper.LogWarn("==========日志记录内容 Warn====");
    Tools.Log.LogHelper.LogError("==========日志记录内容 Error====");
    Tools.Log.LogHelper.LogFlag = false;//停止记录
 
     Tools.Log.LogHelper.ExitThread();// 退出日志记录线程，一般在程序退出时候调用。

如果有更好的方式，欢迎留言