As an update, I made sample project for those "generic strong IDs": https://github.com/jukkahyv/dotnet-entity-id

That includes Roslyn code generator for global usings (global using OrderId = Id<Order>). I've been using those for a while now, and it works.

@agehrke

Thanks for the suggestion though. I think, maybe I can use their source generator as an inspiration. Really, everything else is easy, just adding the type aliases is a pain, and it has to be done for every project.

I should mention that the system has hundreds of entity types, that's why the code per type has to be minimized, and it's also making heavy use of generics.

@agehrke

Also, the good thing about the generic approach is that I actually don't need to repeat equality or JsonConverters. They all work with Id<T>. It seems StronglyTypedId solves a different use case, where you somehow want Ids to be different (some are string, some are int, some are convertible to JSON), but I don't need that: all IDs have the same features and same backing type.

@t4rzsan

Yeah I know. I tried that too. Problem is, when you start having lots of generic code, then you definitely want at least interface UserId: Id<T>. But even then, I found I end up in trouble when type is sometimes UserId, sometimes Id<User>, but I'd want those to be the same! For example, I have method Add<T>(T param) which puts "param" into some generic list. Is it List<UserId> or List<Id<User>>?

@agehrke

In my use case, it's important that the types are alises to generic type, so UserId = Id<User>. I don't want type like UserId, which is what this library seems to be doing? Also, I would like to generate that alias automatically based on User type. I don't want to define UserId anywhere. Based on that blog post, I couldn't see how I can do those. Is it possible?