WPF TreeView with horizontal orientation?

Question

What would be the bast way to change the orientation of the WPF treeview. I would like to work the expand-collapse-functionality to work left to right instead of top to down. I.e. when I click on on the expand button of a treenode I would its subnode to appear right of the parent and the indent should work top-down instead. Also the vertical lines that connect the node must now be horizontal.

Answer 1

Here is a great article by Josh Smith on CodeProject detaling exactly how to do this kind of thing.