title: Programmatically add style trigger
body: <p>Can anyone please help how to programatically add the following style:</p>
  
  <pre><code>&lt;style&gt;
   &lt;style.Triggers&gt;
       &lt;Trigger Binding="{Binding CustomerId}" Value ="1"/&gt;
       &lt;setter Property="Background" Value="Red"/&gt;
   &lt;/style.Triggers&gt;
  &lt;/style&gt;
  </code></pre>