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1 Answers

Aryan Kumar
Aryan Kumar 29 Aug 2023
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The ProducesResponseType attribute in a .NET Core API controller method is used to indicate the types and HTTP status codes that can be returned by the method. This attribute is used by tools like Swagger to generate more descriptive response details for web API help pages.

The ProducesResponseType attribute has two properties:

  • Type: The type of the object that can be returned by the method.
  • StatusCode: The HTTP status code that will be returned if the method returns the specified type.

The following code shows how to use the ProducesResponseType attribute:

C#

[ApiController]
[Route("[controller]")]
public class ProductController : ControllerBase {

  [HttpGet]
  [ProducesResponseType(typeof(Product), StatusCodes.Status200OK)]
  public IActionResult Get() {
    // Get the product data from the database.
    // ...

    // Return the product data.
    return Ok(product);
  }
}

In this code, the Get() action method returns a Product object if the product data is found in the database. The ProducesResponseType attribute indicates that the method can return a Product object and that the HTTP status code will be 200 OK if the product data is found.

The ProducesResponseType attribute is optional, but it is a good practice to use it to help users understand the possible responses from your API.

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