WPF and treeview: tricks with Items

Question

I have some questions about treeview in WPF.

1. How can I change header of selected item?
2. How can I add child Items to selected item?

Answer 1

Robert is right, you should use MVVM and data binding. The tutorial that IMHO explained it best is here

Answer 2

Use MVVM. In your HierarchicalDataTemplate, bind Header and ItemsSource to properties in your view model which implement change notification. Now any changes you make to those properties will be reflected in the TreeView.

If you're not using MVVM and data binding to populate the TreeView, you're wasting a lot of effort.