Visual Studio Builds Projects Every Time I Run

Question

I have a .NET solution in Visual Studio 2010 with a bunch of projects. Up until recently, when I would run the startup project from within the IDE, projects would only buil

Answer 1

The cause could be many things, so without having your solution + projects, we can only guess.

The typical way I handle this problem is by narrowing it down with a binary search. That is,

1. I build everything.
2. Next I find something in the middle of the build order and build that project. If something that that project depends on is the culprit, you'll experience the issue. If something that it doesn't depend on has the problem you won't (i.e. it will say all projects skipped).
3. Now you repeat this process until you narrow it down to (hopefully) the project that has started causing the problem.

This (of course) only works if there is a single project that introduced the new problem (which is likely).

One of the culprits in my specific situation was having an x64 project reference an x86 project that wasn't selected to be built in the x64 configuration.