How do I find files that are missing from visual studio projects?

Question

Due to issues with merging etc, we have lots of project files that don’t contain all source code files that are within their folders.

Before I write a little tool, that

Answer 1

Another possibility: Sometimes the file is selectively not added to the source control. To resolve this, right-click the project and select "Add Items to Folder".

Any files not shown in the source control explorer that you see in their source folders should be here and can be selectively added.