Code level obfuscator vs assembly obfuscator

I've tried some assembly obfuscators but except a few commercial ones, others are not compatible with my proj开发者_StackOverflow中文版ect.

A code level obfuscation is enough for my scenario but I want to know the key diffrences and also is there any free code level obfuscator?

If you are on a single person project (personal hobby), then the free Dotfuscator tool built into Visual Studio might be good enough. The provided link lists the breakdown of limitations provided by the free version.

If you're not just a lone developer, then they require you to get a license.