Visual Studio project not building when I click debug or press F5

Question

VS2010 c#, winforms project.

It does not build automatically when I click on debug or press f5. If I manually build the project before I debug, it compiles and chan

Answer 1

Just in case someone else runs into the same problem as I did: for me it turned out to be a setting in my web.config as follows:

What this guy does is he disables File Change Notification, which is used to restart the application domain when a change is detected in critical files e.g. anything in the bin or .config files. Without fcn, I would make code changes, press F5 and still see the old code, and all breakpoints would be whited out because the source was different to what IISExpress was serving up.