the source file is different from when the module was built

Question

This is driving me crazy.

I have a rather large project that I am trying to modify. I noticed earlier that when I typed DbCommand, visual studio did

Answer 1

I was using Visual Studio 2013 and I had an existing project under source control.
I had downloaded a fresh copy from source control to a new directory.
After making changes to the fresh copy, when building I received the error in question.

My solution:
1) Open Documents\IISExpress\config\applicationhost.config
2) Update virtualDirectory node with directory to the fresh copy and save.