title: WPF Listbox content showing Radio buttons list. Check default radio button from the list initially
body: <p>I was using this link to solve my problem.
  <a href="https://stackoverflow.com/questions/2284752/mvvm-binding-radio-buttons-to-a-view-model">MVVM: Binding radio buttons to a view model?</a></p>
  
  <p>Now my current issue is , i would like to show some radio button from the listbox as checked by default when the screen is loaded at first. </p>
  
  <p>Kind regards,
  Suresh</p>