//Called if user taps a row (as opposed to programatically changing the selection)
private void PlanetListView_ItemTapped(object sender, ItemTappedEventArgs e)
{
string itemString = (string)e.Item;
int selectedRow = e.ItemIndex;
vm.UserTappedList(row: selectedRow, planetString: itemString);
}
//Called if user taps a row (as opposed to programatically changing the selection)
private void PlanetListView_ItemTapped(object sender, ItemTappedEventArgs e)
{
SolPlanet item = (SolPlanet)e.Item;
int selectedRow = e.ItemIndex;
vm.UserTappedList(row: selectedRow, planet: item);
}