public LoginWindow()
{
InitializeComponent();
DataContext = new LoginViewModel(this, ClientLogger.GetOrCreate(), new RailwayServiceConnector());
}
public MainWindow(User user)
{
MainViewModel mainViewModel = new MainViewModel(user, this, new RailwayServiceConnector(), ClientLogger.GetOrCreate(), new PrimaryEntityCommandManager());
DataContext = mainViewModel;
ClientEventManager.GetOrCreate().RegisterEventObserver(mainViewModel);
InitializeComponent();
}