title: How make WPF Listbox child datatemplate controls select the ListBoxItem container when clicked?
body: <p>I have a listbox and in the datatemplate I have an Expander.</p>
  
  <p>If I click on the Expander Header, the expander expand the content zone but not make the parent ListBoxItem Selected.</p>
  
  <p>If I click on the Expanded Content Zone of the Expander, the parent ListBoxItem become selected.</p>
  
  <p>How to make that when clicking the expanderHeader, the content become expanded AND the parent listboxitem become selected?</p>