title: Silverlight relativebinding ItemTemplate ListboxItem - Listbox
body: <p>I created programatically a class (I called it ViewGrid) so that I use an instance of it as ItemTemplate for my ListBox control; of course, it's my data template for the listboxitem....</p>
  
  <p>Also, in my ViewGrid class, I got a dependency property called <em>IsChecked</em> and I want to keep it in sync with the ListBoxItem's IsSelected property. I noticed that in SL there no relativesource-findancestor-ancestortype support for binding as in WPF, still, I need to find a way to keep my <em>IsChecked</em> property synchronized with the IsSelected property of the internally generated ListBoxItem for my ListBox control. Can you help?</p>