Hi,

> Could you tell a good meathod that protect my file of exe created by Vfp cann't be decompiled by others, especilly when I coding C/S structure program, How to protect my program distributed to Client cann't be decompiled?

You can't prevent this. Using tools like Konxise, ReFox, or any other EXE protection tool gives you a slight advantage, but it's only a matter of time that someone cracks the protection if they really want to. Currently, for example, there are claims to crack Konxise and there're websites on how to crack ReFox up to level II.