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

Tools -> Options -> Project and Solutions -> Build and Run

Set your output verbosity to "Diagnostic". After doing another build, examine the output window. At the beginning of each project build, the build system will tell you which dependency is causing the project to be built.

(In my case, it was an .ico file that accidentally got set to Build Action: Resource and Copy To Output: Copy if newer. Very hard to find.)