public ActionResult AddWriter(Writer writer) { WriterValidator writerValidator = new WriterValidator(); ValidationResult result = writerValidator.Validate(writer); if (result.IsValid) { wm.SetWriter(writer); return(RedirectToAction("Index")); } else { foreach (var item in result.Errors) { ModelState.AddModelError(item.PropertyName, item.ErrorMessage); } } return(View()); }