wpf - MVVM, two synchronized Grid Data -

i want control adding , removing items 2 list (selected , unselected), this:

but can't find way this; how can use griddata (or similar control gridcontrol of devexpress) binding 2 list , modify it?

problems:

• i can't use observablecollection control
• i can't bind selecteditems

if have suggestion or sample work, great help

can use 2 observable collections? 1 selected , 1 unselected. seems easiest way implement such functionality.

public class mainviewmodel  {     private readonly observablecollection<item> _selecteditems = new observablecollection();     private readonly observablecollection<item> _unselecteditems = new observablecollection();      public ienumerable<item> selecteditems { { return _selecteditems; } }     public ienumerable<item> unselecteditems { { return _unselecteditems; } }      private void unselectitems()     {         movefromonecollectiontoanother(_unselecteditems, _selecteditems, ...);     }      private void selectitems()     {         movefromonecollectiontoanother(_selecteditems, _unselecteditems, ...);     }      private void movefromonecollectiontoanother(icollection<item> source, icollection<item> destination, ienumerable<item> itemstomove)     {         foreach (var item in itemstomove)         {             source.remove(item);             destination.add(item);         }     } }