private void GetSpecialists() { var selectedLocalization = (Location)this.Localizations.SelectedIndex; var selectedSpecialization = (Specialization)this.Specializations.SelectedIndex; if (selectedLocalization < 0 || selectedSpecialization < 0) { return; } var specialistsService = new SpecialistsService(); var specialists = specialistsService.GetSpecialistsByLocationAndSpecialization (selectedLocalization, selectedSpecialization).ToList(); this._currentSpecialists = specialists; this.Specialists.ItemsSource = specialists.Select(x => $"{x.FullName}"); }