More like a question

[alexrainman]

Chris, i was able to tweak your component to receive a List as ItemsSource and it works nice for my needs.

I have a question for you:

void UpdateSelectedIndex ()
{
    // WHAT IS THIS LINE FOR?
    if (SelectedItem == BindingContext) return;

    SelectedIndex = Children
        .Select (c => c.BindingContext)
        .ToList ()
        .IndexOf (SelectedItem);
}