When will you use this?

Use Web API when a website, mobile app, or React frontend needs JSON from your server.

• Mobile apps and React frontends call your ASP.NET Core API over HTTP with JSON.
• JWT tokens prove who the user is on every protected API request.

Real-world: Swiggy-style delivery API

The Food tech team building Swiggy-style delivery API uses ASP.NET Core Identity to register, login, and reset password with built-in tables. customers and riders never see the C# code — they just get a fast, reliable live order status and tracking.

Production-style code

[ApiController]
[Route("api/[controller]")]
public class SampleController : ControllerBase
{
    [HttpGet]
    public IActionResult Get() => Ok(new { topic = "ASP.NET Core Identity" });
}

What happens in production: In Swiggy-style delivery API, getting ASP.NET Core Identity right means customers and riders trust the live order status and tracking every day.

Lesson example (start here)

Copy this smaller example first. Once it works, compare it with the real-world code above.

[ApiController]
[Route("api/[controller]")]
public class SampleController : ControllerBase
{
    [HttpGet]
    public IActionResult Get() => Ok(new { topic = "ASP.NET Core Identity" });
}

Line-by-line walkthrough

How it works (big picture)

• Study the example line by line.
• Each part connects to ASP.NET Core Identity.
• Edit one line, save, run dotnet run, and see what changes.

Do this on your computer

1. Add or update an API controller action.
2. Test with Swagger or Postman.
3. Check status codes and JSON shape match the lesson.
4. Read the real-world section and name which part of the app uses this topic.
5. Run the example locally with dotnet run and confirm the same behavior.
6. Change one value in the example (route, text, or connection string) and predict what will happen before you save.

Experiments — try changing this

• Change a string or route in the example and save — watch the browser or Swagger response update.
• Break the code on purpose (remove a semicolon), read the error message, then fix it.
• Change the URL path and update the browser address to match.
• Use dotnet watch run while editing ASP.NET Core Identity — the app restarts on save.

Remember

You learned what ASP.NET Core Identity is and when to use it in ShopNest. Practice by changing the example yourself. Use the Next link when you can explain it in your own words.

Common questions