An Atypical ASP.NET Core 5 Design Patterns Guide

762 Pages·2020·49.558 MB·English

by  Carl-Hugo Marcotte

An Atypical
ASP.NET Core 5
Design Patterns
Guide
A SOLID adventure into architectural principles,
design patterns, .NET 5, and C#
Carl-Hugo Marcotte
BIRMINGHAM—MUMBAI
An Atypical ASP.NET Core 5 Design
Patterns Guide
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To everyone who has supported me in my life and my career
or from whom I learned something.
– Carl-Hugo Marcotte
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Foreword
After 10 years of abiding partnership with Carl-Hugo, I still remember the production
support project that ushered this partnership in – the application's accuracy and reliability
were the overriding factors, providing the final product's competitive edge. This project
brought to light Carl-Hugo's talent and his solid grasp of the .NET programming
platform, which spurred me to entrust him with more sensitive and crucial projects,
laying the groundwork for our extended partnership.
We started tackling projects that had been on hold for a long time, requiring deep analysis,
and more importantly, acute imagination to put them across using .NET programs. Once
again, Carl-Hugo's knowledge and skills stood out, leading to robust and flexible .NET
application designs.
Carl-Hugo has consolidated his expertise by spending several years teaching
programming. His book An Atypical ASP.NET Core 5 Design Patterns Guide unites that
experience with his long-term expertise in the field. Therefore, I highly recommend
reading the book and putting it into practice as I've already had the opportunity to attend
some of his training sessions and bear witness to this manual's consistency and practical
features.

Abdelhamid Zebdi
IT Director – Nortek Air Solutions 2007-2017
IT OPS Management – House of Commons of Canada 2017 – present
Contributors
About the author
Carl-Hugo Marcotte has been developing, designing, and architecting web applications
professionally since 2005. He wrote his first line of code at about 8 years old and has been
a computer enthusiast since. He holds a Bachelor's degree in Computer Science from
Université du Québec à Trois-Rivières.
After working at a firm for a few years, he became an independent consultant, where
he developed projects of different sizes for SMEs and educational institutions. He is
passionate about software architecture, C#, ASP.NET Core, and the web.
He loves to share his knowledge, which led him to teaching programming; blogging;
and creating, maintaining, and contributing to multiple open source projects.
I want to thank everyone who supported me during my journey into the
world of authoring, especially my other half and partner in life, Cathie, who
is always there no matter the idea I pursue.
About the reviewers
Will Marcouiller is the founder and current CEO of Société Groupe Conseil WMI. Since
its beginnings, WMI has partnered worldwide with clients of all sizes, from its initial
focus on small-and medium-sized enterprises (SMEs) to international corporations, to
optimize business processes through the application of continuous improvement concepts
combined with the usage of cutting-edge technologies. WMI endeavors to deliver the
highest quality integrated software to its clients in fields such as insurance, manufacturing,
real estate, transportation, and ministries/governmental organizations. In addition to
helping the clients of WMI achieve their objectives, Will has worked to educate the next
generation of programmers by teaching in private colleges.
David Guida is a software engineer with more than 15 years of professional experience
in different domains, including healthcare, finance, and large-scale e-commerce. He is
a Microsoft MVP on Developer Technologies and a member of the .NET Foundation.
He regularly writes articles on his blog and on other platforms as well, such as DZone and
Dev.to. When he is not busy coding or looking for the next book to read, you can find him
in his kitchen baking cakes.
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Table of Contents
Preface
Section 1:
Principles and Methodologies
1
Introduction to .NET
What is a design pattern? 5 .NET 5 versus .NET Standard 12
Anti-patterns and code smells 6 Visual Studio Code versus Visual Studio
versus the command-line interface (CLI) 13
Anti-patterns 6
Technical requirements 17
Code smells 7
Summary 18
Understanding the
Questions 18
web – Request/Response 8
Further reading 18
Getting started with .NET 11
.NET SDK versus runtime 11
2
Testing Your ASP.NET Core Application
Overview of automated testing How to organize your tests 31
and how it applies to ASP.NET How is it easier? 34
Core 20
Summary 36
Test-driven development (TDD) 21
Questions 37
Testing made easy through ASP.
Further reading 37
NET Core 23
How do you create an xUnit test project? 24
Basic features of xUnit 24