Use class from different Project and Solution

In Project B you use Project A as Reference

Project A has to be of type "class library. Then in Project B, add a reference to Project A and it will be available.

Thank you John Tsioumpris for your quick reply.

I forgot to mention that, they have different solutions too.  Please let me know.

Thank you!

A solution is a group of projects. A project can be added to multiple solutions.

If you don't need to debug your classes of ProjectA while working in Project B, you can add a reference to the compiled DLL of project A.

have a look at https://docs.microsoft.com/en-us/visualstudio/ide/managing-references-in-a-project?view=vs-2019

Thank you Éric,
I am looking at it and update here soon.

Thank you!

Eric,
1. I need to Debug the code once the Reference is added.  How can I do that?  Is there an alternative way?

2. The Add Reference is missing from Solution Explorer when I right click it.  I can see it when I right click on Projects --> Add --> Reference.  Not sure if this is the right way.

Please let me know if I am missing anything.

Thank you!

Thank you Eric for your timely help.