Can a project contain other projects with Visual Studio?

Question

I have a software project that has the following structure.

- Library A
- Library B
- Main program
- Test for Main

I have four project files (csproj) for each one, but it would be good if I can debugging/compile those projects in a single solution explorer.

• Does Visual Studio (especially for 2010) support this feature?

Answer 1

No, projects cannot contain other projects in Visual Studio. Solutions are used as the container for projects.

I don't understand why a project container would work but a solution would not. Can you elaborate?