New Post: CollectionControl binding

Thanks.

I added

Private Sub CollectionControl1_ItemAdded(sender As Object, e As Xceed.Wpf.Toolkit.ItemEventArgs) Handles CollectionControl1.ItemAdded
        CollectionControl1.PersistChanges()
    End Sub


    Private Sub CollectionControl1_ItemDeleted(sender As Object, e As Xceed.Wpf.Toolkit.ItemEventArgs) Handles CollectionControl1.ItemDeleted
        CollectionControl1.PersistChanges()
    End Sub

and it works.
But what if my CollectionControl can be used to edit objects from different classes.
In this case I get the following error:

The value "<class2_object>" is not of type "<class1_object>" and cannot be used in this generic collection.

What's the best way of handling this situation?

Thanks for your speedy response.