Nlog 代码日志超过50m就自动创建写入下一个

当日志文件大小超过50MB时，它会被归档，并且始终保留最近的10个归档文件
非常牛逼的log插件 强烈推荐！

Nlog 创建代码

private static Logger logger = LogManager.GetCurrentClassLogger();
 private void InitNLog()
 {
     var config = new NLog.Config.LoggingConfiguration();
     var logfile1 = new NLog.Targets.FileTarget("log")
     {
         FileName = "LogFiles/log.txt", 
         ArchiveFileName = "LogFiles/log_${date:format=yyyy-MM-dd HHmmss}_{#}.txt",
         ArchiveAboveSize = 50 * 1024 * 1024, // 设置为50MB, 
         ArchiveNumbering = ArchiveNumberingMode.Sequence,
         MaxArchiveFiles = 10,
         Layout = "${longdate} [${level}]  ${logger} ${message}"
     };
     var path = System.IO.Path.GetDirectoryName(System.IO.Path.GetFullPath(logfile1.FileName.ToString()))  ;
     if(!Directory.Exists(path))
     {
         Directory.CreateDirectory(path);
     }

     // Rules for mapping loggers to targets            
     if (_config.gameState == GameState.Release || _config.gameState == GameState.Preview)
     {
         config.AddRuleForAllLevels(new NLog.Targets.NullTarget());
     }
     else
     {
         config.AddRule(LogLevel.Debug, LogLevel.Fatal, logfile1);
     }

     // Apply config           
     NLog.LogManager.Configuration = config;

     string title = string.Format("------- {0} -------", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") );
     string header = new string('-', title.Length);

     logger.Info(header);
     logger.Info(title);
     logger.Info(header);
 }