private void SetSelectedItem(int direction)
{
if (SelectedItem == null)
{
SelectedItem = Pins.FirstOrDefault();
}
var index = Pins.IndexOf(SelectedItem as IMapPin);
var newIndex = (index + direction) % (Pins.Count);
if (newIndex < 0)
{
newIndex = Pins.Count - 1;
}
SelectedItem = Pins[newIndex];
}
