title: Binding to the whole data item in XAML
body: <p>I'm using XAML data binding for a <code>ListBox</code> whose <code>ItemSource</code> is set to a list of <code>TypeA</code> object.  One UI element in the <code>ItemTemplate</code> for the <code>ListBox</code> is bound to a property of <code>TypeA</code> as follows:</p>
  
  <pre><code>Source="{Binding PropertyName, Converter={StaticResource customConverter}}"
  </code></pre>
  
  <p>Now, instead of binding to a specific property, I want the UI element to be bound to the whole <code>TypeA</code> instance so that the custom converter can compute value from multiple properties.  The question is: which binding expression I can use to achieve that?</p>