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DDD–Strongly typed Ids-Using C#9 Record Types

I blogged before about the usage of Strongly typed Ids in your domain models. With the introduction of C#9 record types, an alternative approach becomes an option.

Record types are reference types with built-in immutability and value semantics. They automatically provide implementations for Equals, GetHashCode, etc, and offer a very concise syntax known as positional records. This allows us to rewrite our ProductId type using records:

public record ProductId(int Value);
That’s all that is needed.

Thank you C# 9!

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