How to distinguish split and merge operation through  VB-NET program

Discussion created by madanp on Sep 16, 2010
I am creating an extension tool where I like to do some post processing related to feature parameters based on whether split or merge operation has happend. Split can be done eithier using (1)Editor EditCommands [ Editor menu->split or Editor menu->merge] or (2) Split Editor Tool. I am having problem to caputre the inforamtion whether it is split or merge operation if those are done using Editor EditCoomands. I do not have any problem to identify the split operation if it is done by Split Editor Tool.
If any body had the same issue, please give some advice how to solve this problem.