Mastering ASP.NET Web API

Use()

When middleware is written as app.Use(...), a middleware delegate is added to the application's request pipeline. It can be written as an inline delegate or in a class.

It can pass the processing onto next middleware or end pipeline processing it. The Use extension method has delegates taking two parameters, the first parameter being HttpContext and the second, a RequestDelegate.

A very basic middleware can be written as shown in the following code snippet:

    app.Use(async (context, next) => 
   { 
     await context.Response.WriteAsync("Middleware 1"); 
   }); 

Running this code will show Middleware 1 on the browser.

This middleware component does have some logic of writing content on response, but it won't call any other middleware because the second ...