public class ProductViewModel
{
    private IProductModel _model;
    public ICollectionView EntityListView { get; private set; }

    [ImportingConstructor]
    public ProductViewModel(IProductModel model)
    {
        this._model = model;
        EntityListView = CollectionViewSource.GetDefaultView(_model.GetProducts());

        if (EntityListView != null)
        {
            EntityListView.CurrentChanged += OnEntityListViewChanged;
        }
    }

    private void OnEntityListViewChanged(object sender, EventArgs e)
    {
        // TODO: add your code here
    }
}