Book Image

Customizing ASP.NET Core 6.0 - Second Edition

By : Jürgen Gutsch
Book Image

Customizing ASP.NET Core 6.0 - Second Edition

By: Jürgen Gutsch

Overview of this book

ASP.NET Core is packed full of hidden features for building sophisticated web applications – but if you don’t know how to customize it, you’re not making the most of its capabilities. Customizing ASP.NET Core 6.0 is a book that will teach you all about tweaking the knobs at various layers and take experienced programmers’ skills to a new level. This updated second edition covers the latest features and changes in the .NET 6 LTS version, along with new insights and customization techniques for important topics such as authentication and authorization. You’ll also learn how to work with caches and change the default behavior of ASP.NET Core apps. This book will show you the essential concepts relating to tweaking the framework, such as configuration, dependency injection, routing, action filters, and more. As you progress, you'll be able to create custom solutions that meet the needs of your use case with ASP.NET Core. Later chapters will cover expert techniques and best practices for using the framework for your app development needs, from UI design to hosting. Finally, you'll focus on the new endpoint routing in ASP.NET Core to build custom endpoints and add third-party endpoints to your web apps for processing requests faster. By the end of this book, you'll be able to customize ASP.NET Core to develop better, more robust apps.
Table of Contents (18 chapters)

Testing the web API

The best tools to test a web API are Fiddler (https://www.telerik.com/fiddler) or Postman (https://www.postman.com/). I prefer Postman because I find it easier to use. You can use either tool, but in these demos, we will use Postman:

  1. In Postman, create a new request. Enter the API URL, which is https://localhost:5001/api/persons (the port of the URL might vary), into the address field, and then, add a header with the Accept key and the application/json value.
  2. After clicking Send, you will see the JSON result in the response body, as shown in the following screenshot:

Figure 12.2 – A screenshot of JSON output in Postman

Here, you can see the autogenerated values. The GenFu object puts the data into the person's properties, based on the property type and the property name: real first names and real last names, as well as real cities and properly formatted phone numbers.

  1. Next, let's test the XML output...