public StudentSubject GetAssignemnt(int studentSubjectId) { StudentSubjectDao = new StudentSubjectDao(); //convert from business object to data access object DataAccess.Domain.StudentSubject studentSubjectData = new DataAccess.Domain.StudentSubject { StudentSubjectId = studentSubjectId }; studentSubjectData = StudentSubjectDao.GetStudentSubject(studentSubjectData); // map data objects to business objects StudentSubject studentSubject = new StudentSubject() { UserId = studentSubjectData.UserId, SubjectName = studentSubjectData.SubjectName, SubjectDescription = studentSubjectData.SubjectDescription, SubjectCode = studentSubjectData.SubjectCode, StudentSubjectId = studentSubjectData.StudentSubjectId, AssignmentName = studentSubjectData.AssignmentName, Assignment = studentSubjectData.Assignment, AssignmentSize = studentSubjectData.AssignmentSize }; return studentSubject; }