C# Winforms, Distinct double click from expanding the tree node in TreeView

I need to distinct the action in BeforeExpand event of TreeView. The problem is that the DoubleClick event is fired after the BeforeExpand event.

When a user double clicks the tree node the DoubleClick event is fired – which is ok, but the node is expanded/collapsed. I'd like to limit that the user needs to click + to expand the node and block the expand/collapse on double click – is this even possible? The TreeViewCancelEventArgs isn't much of a help since there is no information on how the node is expanded…