Specified cast is not valid on listview item c#

Question

I basically have a listview, with this function when i click on a listview-item.

When i run this and click on the item, i get the following display alerts before my app crashes.

DisplayAlert 1, then DisplayAlert 2, then DisplayAlert 1 and right after this one my app crashes. With "Specified cast is not valid".

I dont know why i get the DisplayAlert 1 again, and why this crashes.

public async void OnSelection(object sender, SelectedItemChangedEventArgs e)
    {
        await DisplayAlert("1", "1", "1");
        if (e.SelectedItem == null)
        {
            return; // ItemSelected is called on deselection, which results in SelectedItem being set to null
        }

        //((ListView)sender).SelectedItem = null;

        await DisplayAlert("2", "2", "2");
        // Cast to zoneviewmodel type
        var selectedZone = (ViewModel.ZoneViewModel)e.SelectedItem; 


        await DisplayAlert("3", "3", "3");
        // Redirect to login
        await Navigation.PushAsync(new LoginPage(selectedZone.Address));

        await DisplayAlert("4", "4", "4");
        // send message containing information to fill loginpage information
        MessagingCenter.Send<MainPage, ViewModel.ZoneViewModel>(this, "loginInfo", selectedZone);
    }

Answer 1

In this line: var selectedZone = (ViewModel.ZoneViewModel)e.SelectedItem; you're trying to cast whatever is in your list to ViewModel.ZoneViewModel. The error is telling you this list item is not assignable to this type. If you're not sure what type the item is, step through or print out e.SelectedItem.GetType().