How do I add icons next to the nodes in a WPF TreeView?

Question

I have a WPF TreeView with just 1 level of items. The TreeView is data bound to an ObservableCollection of strings. How can I ensure that the same icon appears to the left

Answer 1

I think the best approach is to set a Style on the TreeView that will change the Template of the TreeViewItems to have the Image that you want.

The Template will probably need to be a StackPanel with an Image and a label control, you bind the image to your icon, and the label text to the strings from the Observable collection.

I've copied the relevant code snippet from a Code Project article, which covers this in more detail, but I think the below is all you'll need (This code goes in the TreeView.Resources element).