public async Task <IActionResult> Register([FromForm] RegisterModel model) { if (ModelState.IsValid) { var res = await reg.Post(model); if (res != 0) { await Authenticate(model.Login, res); return(RedirectToAction("Index", "Home")); } else { ModelState.AddModelError("", "Некорректные логин и(или) пароль"); } } return(View(model)); }