public ActionResult NewTestimonial(int?id) { NewTestimonialViewModel model = new NewTestimonialViewModel() { BookList = _bookManagement.GetAll().ToList(), ShowingStatusList = EnumHelpers.ConvertEnumToList(typeof(ShowStatus)) }; if (id == null) { model.Testimonial = new Testimonials(); } else { model.Testimonial = _testimonialsManagement.Get(d => d.ID == id); model.ShowingStatus = ConvertHelpers.ConvertBoolToInt(model.Testimonial.IsShow); } return(View(model)); }