Asp.net project dependency issue (Building each tier separately)

Question

Project1 = Asp.net pages project (presentation Layer)

Project2 = Data Access Layer

when Project1 is hosted and running smooth, if i have to add few PRIVATE metho

Answer 1

You don't HAVE to rebuild it. You can just copy the new project2 dll to the web app\bin directory and it will work if the interface hasn't changed. A build of project1 will redundantly rebuild project1 and produce the same result, and also include the latest version of project2, that's why it works, too.