public DataSet GetStuCard(string getGrade,string getClass,string getName,string getNumber,string getCardNumber) { using (OptionDataAccess optionDataAccess = new OptionDataAccess()) { try { return optionDataAccess.GetStuCard(getGrade,getClass,getName,getNumber,getCardNumber); } catch(Exception e) { Util.WriteLog(e.Message,Util.EXCEPTION_LOG_TITLE); return null; } } }