log 方法

  void Application_Error(object sender, EventArgs e)
        {
            // 在出现未处理的错误时运行的代码

            string Message = string.Empty;
            Message = "Url" + Request.Path + Server.GetLastError().ToString();

            //不存在  就建立資料夾  預設  C:\\Trioptics    
            string sPath = @"C:\\MGSLog";
            if (!Directory.Exists(sPath))
            {
                Directory.CreateDirectory(sPath);
            }

            string sLogFileName = sPath + "\\Log" + DateTime.Now.ToString("yyyyMMdd") + ".log";
            System.IO.FileInfo fi = new FileInfo(sLogFileName);

            FileStream fs = fi.Open(FileMode.Append, FileAccess.Write, FileShare.Read);
            StreamWriter sw = new StreamWriter(fs);
            sw.WriteLine(String.Format("{1} | {0} | --> {1} ", DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss:fff"), Message + e.ToString());
            sw.Close();
            fs.Close();    
        }