How to preserve TwoWay binding of CurrentItem when databinding to CollectionViewSource in ComboBox

Question

Lets say we got a simple VM class

public class PersonViewModel : Observable
    {
        private Person m_Person= new Person(\"Mike\", \"Smith\");

                 


        

Answer 1

Have you considered using a CollectionView and set IsSynchronizedWithCurrentItem on the combobox?

That is what I would do - instead of having your CurrentPerson property you have the selected person on your collectionView.CurrentItem and the combobox following currentitem on the collectionview.

I Have used collectionview with sorting and grouping without problems - and you get a nice decoupling from ui with it.

I would move the collectionview to code and bind to it there

public ICollectionView AvailablePersonsView {get;private set;}

in ctor:

AvailablePersonsView = CollectionViewSource.GetDefaultView(AvailablePersons)