I don't get the concept of Visual Studio Projects and Solutions

Question

In Eclipse, I have a workspace that contains all of my projects. Each project builds and compiles separately. A project does not interact with another project.

How does this relate to Visual Studio and Projects/Solutions there?

Answer 1

A VS project is it's own entity. It will build and compile by itself. A Solution is just a way to contain multiple projects. The projects don't necessarily need the other projects to compile (though, they can depend on the other projects).

This just lets you conceptually group projects together into one Big Project. For instance, you can have a separate testing project. It depends on the code from the actual project, and should be kept together with the actual project, but it does not need to be in the same exe/dll.