public async Task <IEnumerable <SelectListItem> > GetGetBusStationsByRouteId(int routeId) { var busStations = await _busStationService.GetByRouteIdAsync(routeId); var item = new List <SelectListItem> { new SelectListItem() { Value = null, Text = "", Selected = true } }; foreach (var bus in busStations) { item.Add(new SelectListItem() { Value = bus.BusStationId.ToString(), Text = $"{bus.BusStationCode}.{bus.BusStationName}" }); } return(item); }