public List <TeacherBDO> GetAllTeachers() { List <TeacherBDO> teachBDO = new List <TeacherBDO>(); foreach (TeacherBDO t in teacherDAO.GetAllTeachers()) { t.TeacherChildrens = teacherDAO.GetAllChildren(t.TeacherId); t.TeacherEligibilities = teacherDAO.GetAllEligibility(t.TeacherId); t.TeacherEducationalBackgrounds = teacherDAO.GetAllEducationalBackground(t.TeacherId); t.TrainingSeminars = teacherDAO.GetAllTrainingSeminars(t.TeacherId); t.WorkExperiences = teacherDAO.GetAllWorkExperience(t.TeacherId); teachBDO.Add(t); } return(teachBDO); }