// To protect from overposting attacks, enable the specific properties you want to bind to, for // more details, see https://aka.ms/RazorPagesCRUD. public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Attach(Car).State = EntityState.Modified; _context.Entry(Car).Property(x => x.CreatedAt).IsModified = false; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!CarExists(Car.CarId)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }