Visual Studio 2010 doesn't rebuild changed code unless I manually select “Rebuild”

Question

In the past week or so, I\'ve noticed that Visual Studio 2010 is not recompiling code unless I force it to. This is a C# 4.0 project with WPF. I hit F5, which seems like it

Answer 1

Gah, I figured this out. It was naturally something stupid I did when messing around with build settings after a too-late night. Here are the things to check:

1. Tools >> Options >> Project and Solution >> Build and Run >> Check that "On run, when projects are out of date" is set to "Always build" or "Prompt to build"
2. Build >> Configuration Manager >> Check that "Build" is checked for all of the projects you want to build for each of the configurations you need to use.