title: Show Progress Circle when data is loaded in View in WPF
body: <p>I want to show an Progress Circle, whenever my UI is loading something.</p>
  
  <p>I tried using an boolean in the shellView and setting it true or false.</p>
  
  <pre><code>IsBusy=true;
  </code></pre>
  
  <p>But as I am using Caliburn Micro for MVVM, the View is not showing the Progress Circle, since the UI freezes on background work. I tried using Background worker, But not working.</p>
  
  <p>I want to show an Progress Indicator when ever my View is busy. May be loading an ComboBox or doing some background task.</p>