title: Open LoginWindow before MainWindow?
body: <p>I've tried using the answer found on this thread <a href="https://stackoverflow.com/questions/17909673/show-login-window-before-main-window">Show login before MainWindow</a>, but changing the shut down parameters causes issues in my application.</p>
  
  <p>What is classes as the best practice for this in WPF?</p>