Ok! Feedbak nº 1: When you aredeveloping a project, the IDE only compiles the file in use....it should compile the "main file" and the dependencies
Did you mark the the main file as “active”? Right click in “Solution Explorer” => “Mark as active”. This should do exactly what you want it to.
Same with “Active Project” if you have more than one project in a solution.
Thanks Endurion!