title: Writing to two textboxes simultaneously
body: <p>In my WPF app I have two textboxes, and I am looking for the following:</p>
  
  <p>I want that if the user writes something on <code>textbox1</code>  the app would put the same value into <code>textbox2</code>,</p>
  
  <pre><code>&lt;TextBox x:Name="textbox1"/&gt;
  &lt;TextBox x:Name="textbox2"/&gt;
  </code></pre>
  
  <p>Is there an elegant way to do this?</p>