async private void OnContactSelected(object sender, SelectedItemChangedEventArgs e) { if (listView.SelectedItem == null) { return; } var selectedContact = e.SelectedItem as Contact; listView.SelectedItem = null; var page = new ContactBookContactDetailPage(selectedContact); page.ContactUpdated += (source, contact) => { selectedContact.Id = contact.Id; selectedContact.FirstName = contact.FirstName; selectedContact.LastName = contact.LastName; selectedContact.Phone = contact.Phone; selectedContact.Email = contact.Email; selectedContact.IsBlocked = contact.IsBlocked; }; await Navigation.PushAsync(page); }
async private void OnContactAdd(object sender, EventArgs e) { var page = new ContactBookContactDetailPage(new Contact()); page.ContactAdded += (source, contact) => { _contacts.Add(contact); }; await Navigation.PushAsync(page); }