I keep getting this error saying there\'s a copy of the .cs file hence the break point will not get hit.
I have tried cleaning solution, rebuilding , deleting the .pdb
Try rebuilding the solution.
Sometimes there are post-build scripts that copy the DLLs from one project to another in order to keep the DLLs updated in different projects. If you modify and compile just one project, then some of these scripts might not be executed and the old DLLs might not be updated.