Upgrade a visual studio solution on the command line with visual studio express
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