1. Introduction to .NET Florin Olariu
“Alexandru Ioan Cuza”, University of Iași
Department of Computer Science

2. ASP.NET Web API - II

3. Agenda Status codes recap Demo : How to return child resources
Demo : Working with serializer settings
Content negotiation
Demo: Content negotiation
Demo : Creating a resource
Demo : Validating input
Demo : Updating a resource
Demo : Deleting a resource
Best practices in Web API’s
Summary

4. Status codes recap

5. Status codes recap

6. Demo : How to return child resources

7. Demo : Working with serializer settings

8. Content negotiation

9. Content negotiation Formatters and Content negotiation
What is the meaning?

10. Content negotiation Formatters and Content negotiation
The idea is selecting the best representation for a given response when the are multiple representation available.
In order to solve this goal we have to:

11. Content negotiation Formatters and Content negotiation
The idea is selecting the best representation for a given response when the are multiple representation available.
Pass media type via the accept header of the request
Sample:

12. Content negotiation Formatters and Content negotiation
The idea is selecting the best representation for a given response when the are multiple representation available.
Pass media type via the accept header of the request
application/json
application/xml
Formatters:

13. Content negotiation
Deals with: output and input

14. Content negotiation

15. Demo: Content negotiation

16. Demo : Creating a resource

17. Demo : Validating input
ModelState
Data validation
For custom validations make use of Fluent Validation
fluentvalidation/

18. Demo : Updating a resource

19. Demo : Deleting a resource

20. One more thing…(1/2)
Postel’s law.

21. Best practices for API’s
One more thing…(2/2)
Best practices for API’s
common-pitfalls-7a83ba3763b5#.6wmaehuhu

22. Summary Recap status codes Formatters and content negotiation
Creating/updating/deleting updating resources
Best practices

23. Bibliography
Pluralsight

24. Questions
Do you have any other questions?

25. Thanks! See you next time! 