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Creating an Action Method for Getting a Single Question

Explore how to create an action method in ASP.NET Core for getting a single question. Understand using route parameters, returning JSON data, and handling 404 Not Found responses when the question does not exist.

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Implementing action method for getting a single question

Let’s move on to implementing the action method for getting a single question. To do that, follow these steps:

  1. Add the following skeleton method underneath the GetUnansweredQuestions method:

Node.js
[HttpGet("{questionId}")]
public ActionResult<QuestionGetSingleResponse>
  GetQuestion(int questionId)
{
    // TODO - call the data repository to get the
      // question
    // TODO - return HTTP status code 404 if the
      // question isn't found
    // TODO - return question in response with status
      // code 200
}

Note the HttpGet attribute parameter.

Note: The curly brackets tell ASP.NET to put the endpoint subpath in a variable that can be referenced as a method parameter. ...