title: WPF ItemsControl binding and the item order
body: <p>I have ItemsControl in a WPF application, which is bind to an array of objects.
  And I am using ItemTemplate to render the list.
  I want to display for each item in the list the item order, like for example</p>
  
  <p>Customer 1
  Name : xxxxx
  Age:   9999</p>
  
  <p>Customer 2
  Name : yyyy
  Age: 8888</p>
  
  <p>Any idea how to do it
  Thanks</p>