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) + @"aklog";
                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>