public static class LogHelper    {        //日志存储路径        private static string LogPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, System.Configuration.ConfigurationManager.AppSettings["LogPath"]);        private static object LogLock = new object();//日志锁        /// <summary>        /// 添加正常信息        /// </summary>        /// <param name="message"></param>        public static void AddInfo(string message)        {            string fileName = DateTime.Now.ToString("yyyyMMdd") + ".txt";//日志名称            string fullName = Path.Combine(LogPath, fileName);            lock (LogLock)            {                if (!Directory.Exists(LogPath))//如果目录不存在 创建目录                {                    Directory.CreateDirectory(LogPath);                }                using (var stream = File.AppendText(fullName))                {                    stream.WriteLine(message);                }                Console.WriteLine(message);            }        }        /// <summary>        /// 添加错误信息        /// </summary>        /// <param name="errorMessage"></param>        public static void AddError(string errorMessage)        {            string fileName ="Error_"+ DateTime.Now.ToString("yyyyMMdd") + ".txt";//日志名称            string fullName = Path.Combine(LogPath, fileName);            lock (LogLock)            {                if (!Directory.Exists(LogPath))//如果目录不存在 创建目录                {                    Directory.CreateDirectory(LogPath);                }                using (var stream = File.AppendText(fullName))                {                    stream.WriteLine(errorMessage);                }                Console.WriteLine(errorMessage);            }        }    }