title: Progressbar for a wpf to load a page
body: <p>I have two wpf windows in my wpf application.</p>
  
  <p>1) When i click on the load button it loads the second Window.  The secong window takes 15 to 20 secs to load.</p>
  
  <p>How do i add a progress bar to show a loading window  and when the second window loads close the progress bar.</p>