解决方案中的哪里放置Emailer类？

Question

I have a solution that has the following structure:

- My Solution
-- Core
--- Core.Interfaces (DLL)
--- Core.Data (DLL)
--- Core.Business (DLL)
-- Models
--- Models.Enums (DLL)
--- Models.DTOs (DLL)
--- Models.Model (DLL)
-- Clients
--- Client Access (ASP.NET MVC)
--- Management Access (ASP.NET)

Now I have an emailer class (IEmailer and Emailer) that will be used in both clients and mainly in the Core.Business as well, my initial thought is to place it in the Core.Business project.

Is that the logical place for the emailer class?

Answer 1

I would add IEmailer to the Core.Interfaces and Emailer to a new assembly, something like Infrastructure.Services . There isn't much benefit in having the interface and implementation in the same assembly.

Next, I would assure that Core.Business has no direct dependency on the Infrastructure.Services assembly, hence on the Emailer type.