// обработка нажатия кнопки добавления
private async void CreateLibrary(object sender, EventArgs e)
{
Library library = new Library();
LibraryPage libraryPage = new LibraryPage();
libraryPage.BindingContext = library;
await Navigation.PushAsync(libraryPage);
}
// обработка нажатия элемента в списке
private async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
Library selectedFriend = (Library)e.SelectedItem;
LibraryPage libraryPage = new LibraryPage();
libraryPage.BindingContext = selectedFriend;
await Navigation.PushAsync(libraryPage);
}
