title: Customizing App.xaml.cs
body: <p>I am trying to do some customization to <code>App.xaml.cs</code> to try to set some behaviors/events. Mostly researching, nothing special.</p>
  
  <p>But whatever I do to the <code>App.xaml.class</code> there is no effect.
  I even emptied the <code>App.xaml.cs</code> class (nothing in it) and the WPF program still compiles.</p>
  
  <p>I cant even start learning until I solve this mystery.</p>