问题
Is there a way to upgrade a visual studio solution on the command line with visual studio express?
When trying to build the old solution with msbuild I get a warning to upgrade with either "vcbuild /upgrade" or "devenv /upgrade". Both of them do not exist in VS Express 2012 and msbuild from that version does not include an /upgrade flag. I also found a solution proposing to use vcupgrade, which exists but can only upgrade individual projects. Also, the upgrade fails in my case, whereas it is completely possible using the GUI.
来源：https://stackoverflow.com/questions/19112374/upgrade-a-visual-studio-solution-on-the-command-line-with-visual-studio-express