Unable to copy a file from obj\Debug to bin\Debug

Question

I have a project in C# and I get this error every time I try to compile the project:

(Unable to copy file \"obj\\Debug\\Project1.exe\" to \"bin\\Debug

Answer 1

This is happening because [yourProjectName].exe process is not closing after finishing debugging.

There are two solutions to this problem.

1. Every time you make change to application, Go to Task Manager -> Processes -> [yourProjectName].exe, end this process. You have to end this process every time you make changes to system.

2. Add a exit button in your application to exit window and add these line to click event

   System.Diagnostics.Process.GetCurrentProcess().Kill();
   Application.Exit();