title: Keep position in scrollviewer
body: <p>My problem is that I have a databinded ItemsControl with some data presented in a list and user can scroll up and down.</p>
  
  <p>When adding new items to the list (i.e. user refreshes the list), the scroll position moves according to however many new items there are. Is there a way to keep the scroll position upon adding new items?</p>
  
  <p>Thanks</p>