title: WPF | Expander Event
body: <p>In my console I'm using two Expanders say(x &amp; y)</p>
  
  <p>by default it has been set 'IsExpanded = False'</p>
  
  <p>once I click x then y should not be Expanded vice-versa</p>
  
  <p>so please reply me with a code</p>