Hi,

by design the WebDataTree does not raise node add event, when a node is copied in the same tree. It occurs only for true add of new node and when moving between trees. I'll log this as a feature request for a future release. The only way to copy a node is using D&D and then you can handle the NodeDropping event and examine the arguments and detect that the D&D operation is it Copy, Move or Default(Move).

Thanks,

Lubomir