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);
        }