title: How do I determine the Top/Left of a Telerik RadTileViewItem control in WPF?
body: <p>I'm using a Telerik RadTileView control in a .Net C# WPF application.</p>
  
  <p>I'm creating a WPF popup window that I'd like to position relative to a RadTileViewItem within the tile view.</p>
  
  <p>I would like to find the <strong>Top</strong> and <strong>Left</strong> position of a <strong>RadTileViewItem</strong> control.</p>
  
  <p>How do I do that?</p>
  
  <p>Thanks</p>