title: Xamarin Forms Element Parent property is null
body: <p>I have a <code>ViewCell</code> that is used as an item template for a <code>ListView</code>:</p>
  
  <pre><code>ListView details_list = new ListView ();
  details_list.ItemTemplate = new DataTemplate(typeof(CartViewCell));
  </code></pre>
  
  <p>Inside the ViewCell I would like to have a function to access the ListView's itemSource in order to delete an item. I though I would do this by accessing the <code>Parent</code> property inside the <code>ViewCell</code></p>
  
  <pre><code>ListView parent = (ListView)this.Parent;
  </code></pre>
  
  <p>But when I attempt this, it shows the parent to be null. Is this an incorrect way to be using the <code>Parent</code> property? What am I missing?</p>