Why should you care?

You cannot force every app store user to update on the day you ship a breaking JSON change.

See it live — copy this example

Create a Web API (dotnet new webapi), paste the example, run dotnet run, test in Swagger.

[ApiVersion("1.0")]
[Route("api/v{version:apiVersion}/products")]
public class ProductsV1Controller : ControllerBase { }

Run Example »

Edit the code and click Run — like W3Schools Try it Yourself.

What happened?

• Study the example, run dotnet run, and test in Swagger.
• ASP.NET Core Web API Versioning connects to earlier modules in this course.

Try it yourself

1. Read what ASP.NET Core Web API Versioning means for ShopNest.API.
2. Type the example — do not only copy-paste.
3. Test in Swagger or Postman.
4. Change a route URL or DTO property and save — test again in Swagger or curl.
5. Return the wrong status code on purpose (404 instead of 200) and see what the client shows.

Remember

You understand ASP.NET Core Web API Versioning in plain language. You traced or ran working C# in ShopNest.API. Move on when you can teach this topic to a friend.