Hands-On RESTful Web Services with ASP.NET Core 3

Class-based middleware

Middleware can also be implemented by using a class-based approach. This kind of approach increases the reusability, testability, and maintainability of middleware. A class-based approach involves the definition of a new type, for example. Let's have a look at class-based middleware:

using System.Threading.Tasks;using Microsoft.AspNetCore.Http;namespace Demo.WebAPI{    public class SampleMiddleware    {        private readonly RequestDelegate _next;        public RequestCultureMiddleware(RequestDelegate next)        {            _next = next;        }        public async Task InvokeAsync(HttpContext context)        {            //DO STUFF                        // Call the next delegate/middleware in the pipeline            await _next(context);        }    }}

Let's examine some key points in this class:

• RequestDelegate represents ...