private void changeSessionProperty(string ModuleShortName, string sessionProperty) { SavingAndReading data = new SavingAndReading(); data.ReadTermTimetableFile(); foreach (WebpageTermTimetable e1 in SystemList.TermTimetableList) { if (e1.ModuleShortName == ModuleShortName) { e1.SessinonProperty = sessionProperty; } } data.WriteTermTimetable(); }