title: How to change font style and font weight programmatically using c# in metro app for windows 8.1
body: <p>I want to change FontStyle and FontWeight using c# in my code .</p>
  
  <p>I tried this:</p>
  
  <pre><code>textblock.FontStyle =FontStyle.Normal 
  </code></pre>
  
  <p>and</p>
  
  <pre><code>textblock.FontWeight =FontWeight.Bold 
  </code></pre>
  
  <p>but its not working.</p>