写日志文件

#region<写日志文件>        /// <summary>        /// 写日志文件,保存到指定的文件        /// </summary>        /// <param name="log">日志内容</param>        /// <param name="fileName">保存到文件</param>        public static void WriterLog(string log, string fileName)        {            try            {                // System.Windows.Forms.MessageBox.Show(log);                string logPath = System.AppDomain.CurrentDomain.BaseDirectory + @"Log\" + fileName;                if (System.IO.File.Exists(logPath))                    CheckLogFile(logPath);                Directory.CreateDirectory(System.AppDomain.CurrentDomain.BaseDirectory + @"Log\");                System.IO.StreamWriter sw = new System.IO.StreamWriter(logPath, true);                sw.WriteLine(DateTime.Now.ToString() + "   日志: " + log);                sw.Flush();                sw.Close();            }            catch            {            }        }        /// <summary>        /// 读取模板文件返回文件内容        /// </summary>        /// <param name="fileName"></param>        /// <returns></returns>        public static string ReadTemplateFile(string fileName)        {            try            {                string filePath = System.AppDomain.CurrentDomain.BaseDirectory + @"Template\" + fileName;                System.IO.StreamReader sr = new System.IO.StreamReader(filePath, Encoding.GetEncoding("gbk"));                string str = sr.ReadToEnd();                sr.Close();                return str;            }            catch            {                return "";            }        }        /// <summary>de         /// 如果日志文件大于1M则备份，并清空文件        /// </summary>        /// <param name="filePath"></param>        private static void CheckLogFile(string filePath)        {            try            {                string path = Path.GetDirectoryName(filePath) + @"\baklog";                System.IO.FileInfo info = new FileInfo(filePath);                if (info.Length > 1048576)                {                    if (!Directory.Exists(path))                    {                        Directory.CreateDirectory(path);                    }                    info.CopyTo(path + @"\" + DateTime.Now.Ticks.ToString() + ".txt");                    info.Delete();                }            }            catch (Exception ex)            {                WriterLog(ex.Message);            }        }        /// <summary>        /// 写日志文件,保存到默认的文件:Bpfaq.log        /// </summary>        /// <param name="log">日志内容</param>        public static void WriterLog(string log)        {            WriterLog(log, "ERP.log");        }        #endregion<结束日志文件>