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ASP.NET Core 5 and Angular

You're reading from   ASP.NET Core 5 and Angular Full-stack web development with .NET 5 and Angular 11

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Product type Paperback
Published in Jan 2021
Publisher Packt
ISBN-13 9781800560338
Length 746 pages
Edition 4th Edition
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Author (1):
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Valerio De Sanctis Valerio De Sanctis
Author Profile Icon Valerio De Sanctis
Valerio De Sanctis
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Toc

Table of Contents (15) Chapters Close

Preface 1. Getting Ready 2. Looking Around FREE CHAPTER 3. Front-End and Back-End Interactions 4. Data Model with Entity Framework Core 5. Fetching and Displaying Data 6. Forms and Data Validation 7. Code Tweaks and Data Services 8. Back-End and Front-End Debugging 9. ASP.NET Core and Angular Unit Testing 10. Authentication and Authorization 11. Progressive Web Apps 12. Windows, Linux, and Azure Deployment 13. Other Books You May Enjoy
14. Index

Data services

The two web applications that we have created so far – HealthCheck in Chapters 1 to 3, and WorldCities in Chapters 4 to 7 – both feature front-end to back-end communication over the HTTP(S) protocol, and in order to establish such communication, we made good use of the HttpClient class, a built-in Angular HTTP API client shipped with the @angular/common/http package that rests on the XMLHttpRequest interface.

Angular's HttpClient class has a lot of benefits, including testability features, request and response typed objects, request and response interception, Observable APIs, and streamlined error handling. It can even be used without a data server thanks to the in-memory web API package, which emulates CRUD operations over a RESTful API: we briefly talked about that at the beginning of Chapter 4, Data Model with Entity Framework Core, when we were asking ourselves if we really needed a data server or not (the answer was no, therefore we didn&apos...

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