Two output file names resolved to the same output

Question

Recently I created new Form called WorkersScreen. When I try to run the project I got this error:

Error 1 Two output file nam

Answer 1

I had the same issue when I renamed one of my Form classes using Ctrl + R + R which VS provides to rename things by default.

Then I somewhat got two classes with the same class name on 2 different files (*.cs).

class Bar { ... } // From Bar.cs
class Bar { ... } // This should've been Foo, from Foo.cs

The two Bar indicating the same resource file that one of them shouldn't.

It's a trivial issue but sometimes could be hard to find the cause because looking at cs files just can't say which one is what you should look for.