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)
1
Section 1: The Fundamentals of ASP.NET Core 3
7
Section 2: Improving Productivity
14
Section 3: Advanced Topics
Appendix A: The dotnet Tool

Using routing attributes

An alternative to adding routes to a routing table is using routing attributes. Routing attributes existed before ASP.NET Core and were even around in ASP.NET MVC and Web API. If we want to have routing attributes automatically recognized by ASP.NET Core, we need to do this:

app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});

In the following sections, we will learn about a few routing attributes and see how to apply them.

Let's see how we can define routes with attributes.

Defining routes

These attributes are used to define routes and can be composed together; if we add a routing attribute to a class and another to one of its methods, the actual route will result from both of them.

The most obvious use of routing attributes would be to decorate an action method, as follows:

[Route("Home/Index")]
public IActionResult Index() { ... }

If, for example, you have many...