title: How to change the View Mode of DocumentViewer
body: <p>How can I change the View Mode of <code>DocumentViewer</code>?, I want the page to be full width since the beginning.<br/>
  If I use <code>documentViewer.FitToWidth()</code> it does stretch but not completely.<br/>
  If I use ctrl+2 it stretches completely and thats what I want to achieve programmatically or using xaml if possible.</p>
  
  <p>Thanks</p>