// Save and Update **** public SchoolClass SaveSchoolClass(SchoolClass schoolClass) { if (schoolClass.Id == 0) { _context.SchoolClass.Add(schoolClass); _context.SaveChanges(); return(schoolClass); } else { SchoolClass sc = _context.SchoolClass.Find(schoolClass.Id); if (sc != null) { sc.ClassName = schoolClass.ClassName; _context.SchoolClass.Update(sc); _context.SaveChanges(); return(sc); } } return(null); }