TreeView: Adding/removing/editing TreeViewItems dynamically

[pamtbaau]

I've two apps that use a TreeView. In both apps the TreeView needs to be dynamically updated by:

• Adding/removing TreeViewItems
• Replacing the value of a TreeViewItem (values are immutable objects)
• Updating the content of the TreeViewItem depending on the replaced value.

I've tried two approaches:

• Updating the underlaying tree of values (to-do's, or financial accounts/categories) and then rebuild the entire tree.
  Issues
  • Requires storing and maintaining which TreeViewItem is selected and/or expanded outside the TreeView.
  • Requires recreating entire tree after each insert/delete/update of underlaying values and apply selected/expanded properties.
• Adding/removing TreeviewItems to/from the children property of the parent.
  Issues
  • The content and value of a TreeViewItem are final and cannot be updated. This requires creating a new TreeViewItem and replacing the outdated one.

Both approaches feel awkward...

Questions:

• Is there something I've overlooked and can help in updating a tree dynamically?
• Any other approach I could try?