When someone click on xamwebtree node, how do I determine what node was selected. I assume I use the Mousedown or MouseUp event but what properties will tell me the item selected.
The XamWebTree exposes a SelectedItems collection that holds all of the selected three nodes. Instead of MouseDown/MouseUp events, you can use the SelectionChanged event to check for a newly added or removed items using e.AddedItems and e.RemovedItems. You can find more information in our online documentation here.