title: wpf resource binding to another element's property
body: <p>I'm new to WPF so pardon me if i'm asking something stupid.
  I have an class named Person in my application.
  Can i do something like </p>
  
  <pre><code>&lt;local:Person x:Key="p" BirthYear="{Binding Path=Value, ElementName=year}"  /&gt; 
  </code></pre>
  
  <p>where 'year' is a control? </p>