问题
We have one project that is used in nearly all other projects in our solution and for some time the whole solution is always rebuild, because a source file in this one project seems to be modified.
1>Project 'Utilities' is not up to date. Input file '[...]\utilities\logging\result.cs' is modified after output file '[...]bin\Debug\Utilities.pdb'.
But the file isn't modified at all nor any other file in this project.
Has anyone a hint for me where the problem could be located? Thanks in advance!
回答1:
Could you check what is the timestamp of the file in question? Could it be set by mistake to some future date? This would force a recompile... Refer https://stackoverflow.com/a/2651443/1336068 for more information.
Also, https://stackoverflow.com/a/775272/1336068 has general information on how to avoid rebuilding your code every time you run your application project in visual studio.
回答2:
I got this message whenever I ran some unit tests for a site. It was a .js JavaScript file that I had edited. It hadn't caused the PDB recompile, so the build always thought this was a modified file, and therefore required a rebuild.
A clean and rebuild fixed this.
回答3:
I was getting a similar error related to the dll and pdb file. It turned out that there was a circular dependency between projects (ie in the Project References) that was causing the dll to be touched after it was compiled. Removing the unneeded reference fixed it.
来源：https://stackoverflow.com/questions/21402633/visual-studio-2012-project-always-out-of-date-cs-modified