public DataTable selectByClass(int selectClass, int selectExam, bool selectByGirl, bool selectByBoy, bool selectAll, bool selectClassBool = false, bool selectExamBool = false) { int sex = 0; if (selectClassBool && (selectByBoy || selectByGirl)) { sex = selectByBoy ? 0 : 1; return(user.selectClassSex(selectClass, sex)); } else if (selectExamBool && (selectByBoy || selectByGirl)) { sex = selectByBoy ? 0 : 1; return(user.selectExamSex(selectExam, sex)); } else if (selectClassBool && selectAll) { return(user.selectClass(selectClass)); } else if (selectExamBool && selectAll) { return(user.selectExam(selectExam)); } else if ((selectByBoy || selectByGirl)) { sex = selectByBoy ? 0 : 1; return(user.selectSex(sex)); } else { return(user.selectAll()); } }