I'm trying to build an app that allows modifying a grouped collection (nested ObservableCollection) in a ListView. I am showing the grouped collection in the ListView using a CollectionViewSource.
I am not yet using the ObservableGroup / ObservableGroupedCollection yet, my question is whether they are a viable option.

I would like to achieve the following:

• edit the group names
• edit the individual items
• add / remove new groups
• add / remove individual items

Imagine this (simplified example): having an ObservableCollection<Book>, and every Book has a Title (string) and an ObservableCollection<Uri> for some images.
I want to add books, edit their title, and also add Uris of images and edit them.

• Inside my ListView, I have
  • a GroupStyle with a HeaderTemplate containing
    • TextBox to edit the Titles
    • a Button to insert new Uri items --> here is my issue
  • an ItemTemplate containing a TextBox for the image Uris
• outside my ListView I have a Button to add new Book items to the ObservableCollection<Book>

With my current solution (ObservableCollection<Book> with Title and ObservableCollection<Uri> inside Book), I can edit Book Titles and Uris, but when I add a new Uri, the ListView does not show it because the CollectionViewSource does not notice it, because the ObservableCollection<Book> does not emit a CollectionChanged event.

This is being discussed in in this StackOverflow item as well.

Then I found ObservableGroup / ObservableGroupedCollection from Windows Community Toolkit, but I'm unsure whether that will solve my issue? Since the Key is immutable I assume they won't let me edit the Book Titles?