title: Using MVVM Foundation Messenger to Show Dialog
body: <p>I'm building a WPF app and trying to conform to MVVM best practices. I'm using the <a href="http://mvvmfoundation.codeplex.com/" rel="nofollow noreferrer">MVVM Foundation</a> framework and noticed the <a href="http://marlongrech.wordpress.com/2009/04/16/mediator-v2-for-mvvm-wpf-and-silverlight-applications/" rel="nofollow noreferrer">Messenger</a> class, which I've read should be used for <a href="https://stackoverflow.com/questions/454868/handling-dialogs-in-wpf-with-mvvm">handling dialogs in WPF</a>. This sounds great, but I'm totally not understanding how to use a Messenger for this purpose. Literally, all I want to do is open a modal About dialog --I don't need to pass any messages back and forth.</p>
  
  <p>Was the intent of the Messenger class to be used for cases where dialogs require a message from its parent, or return a message to its parent? Is it overkill for an About dialog? Would I be better off simply adding code to an event handler to show the dialog?</p>