Thread exiting message in .Net MVC console

I get this message: the thread has exited with code 0 sometimes in the output window in debug mode when running a .net mvc c# application.

The application still works after these messages, it does not crash and there is no reason to crash, any ideas on what this 开发者_如何学Cmean?

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Those are not errors -- those messages are simply telling you that a background thread has exited. Zero means the thread ran and exited successfully.