Add existing project to solution with files

Question

How can I add a project I have developed separately to my current solution including all its project files? When I select Add existing project in my solution explorer, the project is added but I don't see the project files in my solution folder.

Answer 1

If you are on some version of Visual Studio, then I think that you can't do what you are asking. However you can manually copy the project to wherever you need it to be, and then add it to the former solution.