How to create Web API in ASP.NET Core.

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Create a controller that has 3 things:

  • It should have the [ApiController] attribute on them. This attribute tells that the controller will serve HTTP API Responses.
  • Derive from ControllerBase class instead of Controller class. 
  • It should have attribute routing applied on them like [Route("someUrl/[controller]")].
  • The controller of a Web API looks like this:-


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