How to notify TreeView about the changes in PropertyGrid

I would like to implement this solution. When I select an item in the TreeView it is available for editing in the PropertyGrid. When I make changes using the PropertyGrid these changes will automatically appear in the TreeView.
For example I want to change the name of the object. How to do it? I mean how to notifythe TreeView about the name change made in the PropertyGrid.

P.S. I use third-party libraries which are not adapted to MVVM and therefore I can't use MVVM in my solution.