1. DDD with C# 3.0 features: Solar System Simulation Andre Boonzaaijer, Pieter-Joost van de Sande {aboonzaaijer, pjvdsande}@sogyo.nl

3. What is “Domain Driven”?

4. It’s not: Layering Presentation Layer Data Layer

5. Layering Presentation Layer Data Layer Business logic

6. Layering Presentation Layer Data Layer Business logic

7. Layering Presentation Layer Data Layer Business logic

8. Layering Presentation Layer Data Layer Business logic +/- 2 years

9. Layering Presentation Layer Data Layer Business logic +/- 2 years +/- 5 years

10. Layering Presentation Layer Data Layer Business logic +/- 2 years +/- 5 years ?

11. Layering Presentation Layer Data Layer Business logic Email SMS Printing Email Where?

12. Layering Presentation Layer Data Layer Business logic

13. Sunflower

15. Gravity (x,y) force = 0; Foreach body in universe force += body.getForce(x,y); body.move(force);

16. Domain

17. Wrapping the domain User Interface Clock Database Bootstrapper / Host

18. User Interface

22. Domain in C# 3.0

23. Domain in C# 3.0

28. Form1 class Methods DrawUniverse: Who is responsible? UI.DrawUniverse() vs Universe.Draw()

29. Universe.Draw() Extension

30. Universe.Draw() Extension