ASP.NET Core 3 and React

Implementing an asynchronous controller action method

Now, we are going to change the implementation of the unanswered questions endpoint so that it's asynchronous:

1. We are going to start by creating an asynchronous version of the data repository method that gets unanswered questions. So, let's create a new method in the data repository interface:

public interface IDataRepository{  ...  IEnumerable<QuestionGetManyResponse>     GetUnansweredQuestions();  Task<IEnumerable<QuestionGetManyResponse>>     GetUnansweredQuestionsAsync();  ...}

A key difference of an asynchronous method is that it returns a Task of the type that will eventually be returned.

2. Let's create the data repository method implementation:

public async Task<IEnumerable<QuestionGetManyResponse>> ...