public void AddInformationTip(String title, String descritpion, String imageUrl, int cityID, double lat, double lng) { using (var scope = new TransactionScope()) { var city = _repository.Load<City>(cityID); InformationTip tip = new InformationTip() { Description = descritpion, ImageUrl = imageUrl, Title = title, City = city ,Lat=lat, Lng = lng}; _repository.Save<InformationTip>(tip); city.InformationTips.Add(tip); scope.Complete(); } }