How to set a PlacementTarget for a WPF tooltip without messing up the DataContext?

Question

I have a typical MVVM setup of Listbox and vm + DataTemplate and item vm\'s. The data templates have tooltips, which have elements bound to the item vm\'s. All works great.

Answer 1

As I understand [but I probably wrong (no harm in trying)], you can initialize your items with reference to objects which were used in ancestor DataContext, i.e.

public class ItemsVM : VMBase
{
     public T parentElement;
     public ItemsVM (T _parentElement)
     {
         this.parentElement = _parentElement;
     }

     ...

}