dotnet-domain-modeling

To build a rich C# domain model, encapsulate business rules within aggregates and entities using Domain-Driven Design. This prevents anemic data structures by enforcing invariants and raising domain events directly within the domain layer.

Implement a Money value object in .NET by creating an immutable type that handles addition and enforces currency validation. This encapsulates domain logic and ensures loose coupling through side-effect-free operations.

Use aggregate roots and domain events in C# when modeling complex business rules that require strict invariant enforcement and event-driven architecture. Aggregates handle state changes, while domain events notify other system parts of those changes.

DDD domain modeling explicitly keeps persistence details out of the C# domain layer. It creates persistence-agnostic models by relying on repositories for data access, ensuring the domain focuses entirely on business rules.

The best way to design an Order aggregate is to use tactical DDD patterns in C#. Model the aggregate root to handle line additions, submissions, and total calculations internally, raising domain events for notifications upon state changes.