<https://parallelcodescom-79f94a.ingress-daribow.easywp.com/wpf-listbox-selectionchanged-get-selecteditem/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://parallelcodes.com/wpf-listbox-selectionchanged-get-selecteditem/>