public IEnumerable <Stations> FindStationByProvince(string province)
        {
            List <Stations>         result    = new List <Stations>();
            IEnumerable <Districts> districts = districtsDao.FindDistrictsByProvince(province);

            foreach (Districts district in districts)

            {
                IEnumerable <Stations> stations = FindStationByDistrict(district.District);
                foreach (Stations station in stations)
                {
                    result.Add(station);
                }
            }
            return(result);
        }
 public IEnumerable <Districts> FindDistrictsByProvince(string province)
 {
     return(districtDao.FindDistrictsByProvince(province));
 }