public ActionResult Index(int?id, long logicAddress) { if (id == null) { return(HttpNotFound()); } var oldComputerDTO = _computerService.GetById(id.Value); var routerDTO = _routerService.GetById(oldComputerDTO.RouterId); if (!_networkService.CheckIPRange(id.Value, logicAddress)) { var computerVM = _mp.Map <ComputerVM>(oldComputerDTO); ModelState.AddModelError("", "Ip is out of range!"); return(View(computerVM)); } _computerService.Update(new ComputerDTO { Model = oldComputerDTO.Model, HardwareAddress = oldComputerDTO.HardwareAddress, Id = oldComputerDTO.Id, Manufactured = oldComputerDTO.Manufactured, RoomId = oldComputerDTO.RoomId, RouterId = oldComputerDTO.RouterId, LogicAddress = logicAddress, Mask = routerDTO.Mask }); return(RedirectToAction("Index", "Computer")); }