I came up with a solution that may not be the optimal one, but it works. I added an EventSetter in the TreeView style and assigned a click event for TreeViewItem objects.
FYI: instead of having to get the the TreeViewItem I find it better to include a reference to the parent in your model so in your Nodes class.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.