public static void AddStudent(Student student) { using (var context = new DbContext()) { context.Students.Add(student); context.SaveChanges(); } StudentAddedOrDeleted?.Invoke(EventArgs.Empty); }
public static void DeleteStudentWithPesel(string pesel) { using (var context = new DbContext()) { var student = context.Students.Find(pesel); if (student == null) { throw new NullReferenceException("Nie znaleziono studenta w bazie danych..."); } context.Students.Remove(student); context.SaveChanges(); } StudentAddedOrDeleted?.Invoke(EventArgs.Empty); }