>I want to separate my ASPX files and my code behind files into different directories. I know I can path the correct CB file in the ASPX, but is there anything similar to the VFP SET PATH command to allow a development search path?

You could try making the path an application variable or in your config, and see if the Web Form can use that variable when declaring where the codebehind file is? I doubt that will work though.

Why do you want to do this? I haven't found a reason for it.