How to get TreeViewItem from HierarchicalDataTemplate item?

Question

I have a TreeView which uses a HierarchicalDataTemplate to bind its data.

It looks like this:

Answer 1

I ran into this same problem. I needed to get to the TreeViewItem so that I could have it be selected. I then realized that I could just add a property IsSelected to my ViewModel, which I then bound to the TreeViewItems IsSelectedProperty. This can be achieved with the ItemContainerStyle:

Now if I want to have an item in the treeview selected, I just call IsSelected on my ViewModel class directly.

Hope it helps someone.