How to check whether the selected node is the LEAF (have no childs) in the TREE VIEW?

[mmb]

I want to know the whether the selected node is the LEAF (have no childs) or not in the TREE VIEW.

or in other words
How to check whether the selected item in the TREEVIEW has futher childs or not ?

NEED HELP PLS

 

[Paszt]

Check the Count property of the Nodes collection for the given node.

For example: nd.Nodes.Count where nd is the given node.