public void Log(string logFileName, string log) { var applicationLog = applicationSettingService.GetLogFolderPath(); var filePath = string.Format(@"{0}\{1}{2}.txt", applicationLog, logFileName, DateTime.Now.ToString("yyyyMMdd")); using (var writer = System.IO.File.AppendText(filePath)) { writer.WriteLine(log); writer.WriteLine(DateTime.Now); } }