private void GetUIDataFromDB() { FlightsViewModel.GetAllCities().ForEach(c => CitiesList.Add(c)); CitiesList.Insert(0, "Not selected"); SelectedCity = CitiesList[0]; FlightsViewModel.GetAllCompanies().ForEach(c => CompaniesList.Add(c.name)); CompaniesList.Insert(0, "Not selected"); SelectedCompany = CompaniesList[0]; SelectTrips(); }