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

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:

true