using Model; namespace Views { public partial class App : Application { public Especetheque Especetheque { get; private set; } = new Especetheque(); public Espece EspeceSelectionner { get => EspeceSelectionner; set { EspeceSelectionner = value; OnPropertyChanged(nameof(EspeceSelectionner)); } } public App() { InitializeComponent(); MainPage = new AppShell(); BindingContext = Especetheque; } } }