Code coverage during manual testing in .NET development server

I have an application hosted in development server.

I need to determine the code coverage at the time of manual testing done by QA guys. Thus I am able to find out that how much code have been covered by QA.

Thanks in advance to all.

Is there any third party tool which can help me to do this. I have used dotCover, but that can only cover the local IIS application, not remotely hosted application.

Please help me to do this.