title: MVVM, DialogService and Dialog Result
body: <p>I'm currently learning WPF/MVVM, and have been using the code in the following question to display dialogs using a Dialog Service (including the boolean change from Julian Dominguez):</p>
  
  <p><a href="https://stackoverflow.com/questions/3801681/good-or-bad-practice-for-dialogs-in-wpf-with-mvvm">Good or bad practice for Dialogs in wpf with MVVM?</a></p>
  
  <p>Displaying a dialog works well, but the dialog result is always false despite the fact that the dialog is actually being shown. My DialogViewModel is currently empty, and I think that maybe I need to "hook up" my DialogViewModel to the RequestCloseDialog event. Is this the case?</p>