常用方法
常用方法
常用方法
常用方法
private void Flights_AirplaneCombo_SelectionChanged(object sender, SelectionChangedEventArgs e) { if (Flights_AirplaneCombo.SelectedValue == null) { Flights_BeneficiaryCombo.IsEnabled = false; return; } Flights_BeneficiaryCombo.ItemsSource = Service.GetComboAirline().Tables[0].DefaultView; Flights_BeneficiaryCombo.SelectedValue = Service.GetAirplaneOwner((string)Flights_AirplaneCombo.SelectedValue); Flights_BeneficiaryCombo.IsEnabled = true; }