Collect all NI trace commands programatically

Hello, 

we are using NI Visa in .net and in c++ to communicate with a lot of equipment. is there a way to sniff/collect all NI commands sent on a computer, something similar to NI I/O Trace but inside our program. it would be very usefull in order to debug the equipment communication. i am interested in the solution prerably in .net (or in native).

thanks 

sebastien