public static Student GetById(int id) { TrainingManagementDbContext db = new TrainingManagementDbContext(); var student = db.Students.FirstOrDefault(c => c.Id == id); return(student); }
private static bool Update(Student student) { TrainingManagementDbContext db = new TrainingManagementDbContext(); db.Students.Attach(student); db.Entry(student).State = EntityState.Deleted; return(db.SaveChanges() > 0); }