Book Image

Modern Web Development with ASP.NET Core 3 - Second Edition

By : Ricardo Peres
Book Image

Modern Web Development with ASP.NET Core 3 - Second Edition

By: Ricardo Peres

Overview of this book

ASP.NET has been the preferred choice of web developers for a long time. With ASP.NET Core 3, Microsoft has made internal changes to the framework along with introducing new additions that will change the way you approach web development. This second edition has been thoroughly updated to help you make the most of the latest features in the framework, right from gRPC and conventions to Blazor, which has a new chapter dedicated to it. You’ll begin with an overview of the essential topics, exploring the Model-View-Controller (MVC) pattern, various platforms, dependencies, and frameworks. Next, you’ll learn how to set up and configure the MVC environment, before delving into advanced routing options. As you advance, you’ll get to grips with controllers and actions to process requests, and later understand how to create HTML inputs for models. Moving on, you'll discover the essential aspects of syntax and processes when working with Razor. You'll also get up to speed with client-side development and explore the testing, logging, scalability, and security aspects of ASP.NET Core. Finally, you'll learn how to deploy ASP.NET Core to several environments, such as Azure, Amazon Web Services (AWS), and Docker. By the end of the book, you’ll be well versed in development in ASP.NET Core and will have a deep understanding of how to interact with the framework and work cross-platform.
Table of Contents (26 chapters)
Section 1: The Fundamentals of ASP.NET Core 3
Section 2: Improving Productivity
Section 3: Advanced Topics
Appendix A: The dotnet Tool

Getting your context

You will probably remember the HttpContext class from ASP.NET. The current instance of this class would represent the current context of execution, which included both the request information and the response channel. It was ubiquitous, and even though in Web Forms it was sometimes hidden, it was the way by which the web application communicated with the client.

Of course, ASP.NET Core also has an HttpContext class, but there is a big difference: there is no longer a Current static property that lets us get hold of the current context—instead, the process is a bit more convoluted. Anyway, all of the infrastructure classes—middleware, controllers, views, Razor pages, view components, tag helpers, and filters—allow easy access to the current context. Those who don't can leverage the IHttpContextAccessor interface through DI and get a pointer to the current context:

//this is required to register the IHttpContextAccessor...