async void Handle_ItemTapped(object sender, ItemTappedEventArgs e)
        {
            if (e.Item == null)
            {
                return;
            }

            Page           p  = new ObjectPage((((ListView)sender).SelectedItem) as Telesa, (BindingContext as CurrentObjects).AllObjects);
            NavigationPage np = new NavigationPage(p);
            await Application.Current.MainPage.Navigation.PushAsync(np);

            //Deselect Item
            ((ListView)sender).SelectedItem = null;
        }
 async void AddNew_Clicked(object sender, EventArgs e)
 {
     Page           p  = new ObjectPage((BindingContext as CurrentObjects).AllObjects);
     NavigationPage np = new NavigationPage(p);
     await Application.Current.MainPage.Navigation.PushAsync(np);
 }