title: saving user state in MVVM application
body: <p>I am creating a MVVM application and the basic system allows a user to register, login, and add data to a database.</p>
  
  <p>There are multiple users, so I want the system to be able to maintain the user's credentials/state after they login and have the application open.</p>
  
  <p>So far I haven't been able to find any good tutorials online to advise me about this, so if anyone knows any or knows of a way to do this I would really appreciate some help.</p>
  
  <p>Thanks.</p>