using BookApp.Pages; using System.Collections.ObjectModel; using BookApp.ViewModel; using System.Diagnostics; namespace BookApp { public partial class MainPage : ContentPage { public ViewModelNavigation Nav { get; } = new ViewModelNavigation(); void OnSelectionChanged(object sender, SelectionChangedEventArgs e) { Debug.WriteLine( $"Selection Changed: Added:{e.CurrentSelection.FirstOrDefault()}, Removed:{e.PreviousSelection.FirstOrDefault()}" ); } public MainPage(ViewModelMenu data) { InitializeComponent(); BindingContext = data; } } }