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 Check that "On run, when projects are out of date" is set to "Always build" or "Prompt to build"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.

Answer 2

Also if multiple projects in solution, check configuration manager. If you have some projects "Any CPU" and some "x86", will be builded only projects of same arhitecture. Same with "Debug" and "Realese" config.

Answer 3

Had similar issue in 2020 with VS 2019 (Community Edition) and WPF project not being rebuilt (deemed as "up-to-date") even though the referenced project was rebuilt. The above advice (Tools->Options and Configuration Manager) is met in many places, though didn't work for me.

Eventually changing .csproj file and adding the following line (under ProertyGroup) worked for me:

<DisableFastUpToDateCheck>true</DisableFastUpToDateCheck>