title: Chaining dependency properties with MVVM
body: <p>I am looking for a way to expose a property in my ViewModel and have it influenced by two separate controls in my View.</p>
  
  <p>In code view, I am trying to do something like this:</p>
  
  <pre><code>propdp object MyObject...
  
  &lt;MySelector SelectedItem="{Binding MyObject, Mode=TwoWay}" /&gt;
  &lt;MyEditor DataContext="{Binding MyObject, Mode=TwoWay}" /&gt;
  </code></pre>
  
  <p>The purpose of this is to let the user select an item and edit it on the same user control, but its not working for me. When a selection is made in MySelector, the change fails to propagate to MyEditor. </p>
  
  <p>Is this possible to do?</p>