How do I reference the output of a project in a different solution?

Question

In my current project, in Solution X, how do I reference the output of a class library project in a different solution, Solution Y? If I can't reference (I haven't found a way) the output, what is the best way to get the same outcome?

Update - these are c# projects, .NET 4.5.

Answer 1

In the project in solution X right click on References and select Add reference. This opens the Add reference dialogue. In this dialogue click on Browse and navigate to the output directory of solution Y. Select the desired assembly. After completion be sure to set the reference's property: Copy local = true.