So annoying. This tends to happen a lot, especially inside MVC view files.
Quite frequently will be working along in a solution with no errors, then after some minor refactoring, the solution-wide analysis will suddenly show dozens and dozens of errors. These are always "cannot resolve symbol" errors on symbols which clearly exist. Especially frustrating is seeing an occurrence of "cannot resolve symbol" when the EXACT SAME symbol is being correctly resolved only a couple of lines away.
No amount of cache clearing or restarting Visual Studio seems to help with this. Usually, the only way to deal with it is to trash the *Resharper* files/folders in the solution and start all over.