using System.ComponentModel;
    using System.Windows;
    
    namespace ViewModelAccess
    {
        public partial class CittyDetailsWinow : Window
        {
            public CittyDetailsWinow()
            {
                InitializeComponent();
            }
        }
        public class CityDetailsViewModel:INotifyPropertyChanged
    
        {
            private MainWindowViewModel mainWindowViewModel=null;
            public MainWindowViewModel MainWindowViewModel
            {
                get
                {
                    return mainWindowViewModel;
                }
                set { mainWindowViewModel = value;OnPropertyChanged("MainWindowViewModel"); }
                
            }
            public Airport? CitySelecteItem
            {
                get
                {
                    return  MainWindowViewModel.SelectedItem;
                }
              
            }
            public CityDetailsViewModel(MainWindowViewModel mv)
            {
                MainWindowViewModel = mv;
    
            }
            public event PropertyChangedEventHandler PropertyChanged;
    
            protected virtual void OnPropertyChanged(string propertyName = null)
            {
                var handler = PropertyChanged;
                if (handler != null)
                    handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    
    }