public async Task <IActionResult> Create(OrderViewModel order) { if (ModelState.IsValid) { try { await OrderHelper.AddOrderAsync(order); return(RedirectToAction(nameof(Index))); } catch (Exception) { ModelState.AddModelError("", "Unable to save changes. " + "Try again, and if the problem persists, " + "see your system administrator."); } } return(View(order)); }