VS2010 Add class failure problem, pop-up error box, prompt CodeModel operation failed, unable to access tag database

When I use VS2010 to add a class, an error box pops up, prompting the CodeModel operation to fail, can not access the tag database English version is CodeModel operation failed,possibly cannt access tag Database. Adding classes is a hassle.
Later to the online search, finally in a forum found a solution, record here memo.

WORKAROUND: 1. Delete the *.sdf file in the file where the solution resides
2. Delete files under IPCH in the solution directory
3. Re-open the solution, VS will recreate the Class wizard. You can then add the class as normal.

VS2010 Add class failure problem, pop-up error box, prompt CodeModel operation failed, unable to access tag database