Visual Studio - project shows up as “Miscellaneous Files”

Question

This is a weird one. I have a C# Class Library project within my solution. If I open a .cs file within this project, the Project drop-down on the c

Answer 1

I had this problem in VS2019 after upgrade from 2017. Clean and rebuild of solution fixed it.

1. Build -> Batch build -> Select all -> Clean
2. Build -> Batch build -> Select all -> Build