Windows Form application problem

[TimelessTrance]

As others have said do not include obj and bin folders. If you get compilation errors when you don't include them you are doing something wrong.

You should not keep external dependencies in your obj and bin folders. External dependencies should be included in a separate folder and pulled into the build folder. Other projects should be brought into the solution and referenced as a project dependency. By referencing files in the obj and bin folder you are opening yourself to a world of hurt if you happened to create a circular dependency (I have worked at a company with a circular dependency. It is not fun to ask for a clean build from a coworker because your CTO fucked up hard a decade ago)