>You recommended:
>
>

> dataitem d = (dataitem)e.AddedItems[0];
>

>
>
>But, this assumes the id is the FIRST element, right, or that I must know whatever element it is?
>
>See my recent (new) WPF post on setting SelectedValuePath in XAML and using SelectedValue in code, to see if that is a good way?

With the mode set to single there will only ever be one item selected. So index 0 will always be correct.

It's AddedItems to the selected collection not added items to the listView.