一个比较简单的日志帮助类，方便临时测试异常bug。

调用方式：

 LogHelper.WriteLog("日志....");

  /// <summary>
    /// 日志文件
    /// </summary>
    public static class LogHelper
    {
        /// <summary>
        /// 文件名
        /// </summary>
        private static string logFile = string.Empty;
        /// <summary>
        /// 文件地址
        /// </summary>
        private static string logPath = string.Empty;

        public static void InitLog()
        {
            logPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "log");
            logFile = Path.Combine(logPath, DateTime.Now.ToString("yyyyMMdd") + ".txt");
            if (!Directory.Exists(logPath))//若文件夹不存在则新建文件夹  
            {
                Directory.CreateDirectory(logPath); //新建文件夹  
            }
        }

        #region 写日志
        /// <summary>
        /// 写日志
        /// </summary>
        /// <param name="log"></param>
        public static void WriteLog(string log)
        {
            try
            {
                InitLog();
                StreamWriter sw = new StreamWriter(logFile, true);
                sw.WriteLine(string.Format("{0}\t{1}", log, DateTime.Now));
                sw.Flush();
                sw.Close();
            }
            catch (Exception ex) { }
        }
        #endregion
    }