private void CountriesAcv_OnSuggestionItemSelected(object sender, SuggestionItemSelectedEventArgs e)
{
var selectedCountry = e.DataItem as string;
StatesAcv.IsEnabled = true;
StatesAcv.ItemsSource = Lookups.StatesLookup(selectedCountry);
StatesAcv.Focus();
}
private void StatesAcv_OnFocused(object sender, FocusEventArgs e)
{
StatesAcv.ShowSuggestions();
}