Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Clean Code in C#
Clean Code in C#

Clean Code in C#: Refactor your legacy C# code base and improve application performance by applying best practices

eBook
€21.99 €31.99
Paperback
€38.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Product feature icon AI Assistant (beta) to help accelerate your learning
Table of content icon View table of contents Preview book icon Preview Book

Clean Code in C#

Code Review – Process and Importance

The primary motivation behind any code review is to improve the overall quality of the code. Code quality is very important. This almost goes without saying, especially if your code is part of a team project or is accessible to others, such as open source developers and customers through escrow agreements.

If every developer was free to code as they pleased, you would end up with the same kind of code written in so many different ways, and ultimately the code would become an unwieldy mess. That is why it is important to have a coding standards policy that outlines the company's coding practices and code review procedures that are to be followed.

When code reviews are carried out, colleagues will review the code of other colleagues. Colleagues will understand that it is only human to make mistakes. They will check the code for mistakes, coding that breaks the company...

The code review process

The normal procedure for carrying out a code review is to make sure your code compiles and meets the requirements set. It should also pass all unit tests and end-to-end tests. Once you are confident that you are able to compile, test, and run your code successfully, then it is checked in to the current working branch. Once checked in, you will then issue a pull request.

A peer reviewer will then review your code and share comments and feedback. If your code passes the code review, your code review is completed and you can then merge your working branch into the main trunk. Otherwise, the peer review will be rejected, and you will be required to review your work and address the issues raised in the comments provided by your reviewer.

The following diagram shows the peer code review process:

Preparing code for review

Preparing for a code review can be a right royal pain at times, but it does work for better overall quality of code that is easy to read and maintain. It is definitely a worthwhile practice that teams of developers should carry out as standard coding procedures. This is an important step in the code review process, as perfecting this step can save the reviewer considerable time and energy in performing the review.

Here are some standard points to keep in mind when preparing your code for review:

  • Always keep the code review in mind: When beginning any programming, you should have the code review in mind. So keep your code small. If possible, limit your code to one feature.
  • Make sure that all your tests pass even if your code builds: If your code builds but you have failing tests, then deal immediately with what's causing those tests to fail. Then, when the tests pass as expected, you can move on. It is important...

Leading a code review

When leading code reviews, it is important to have the right peoplepresent. The people who will be in attendance at the peer code review will be agreed upon with the project manager. The programmer(s) responsible for submitting the code for review will be present at the code review unless they work remotely. In the case of remote working, the reviewer will review the code and either accept the pull request, decline the pull request, or send the developer some questions to be answered before taking any further action.

A suitable lead for a code review should possess the following skills and knowledge:

  • Be a technical authority: The person leading the code review should be a technical authority that understands the company's coding guidelines and software development methodologies. It is also important that they have a good overall understanding of the software under review.
  • Have good...

Knowing what to review

There are different aspects of the code that have to be considered when reviewing it. Primarily, the code being reviewed should only be the code that was modified by the programmer and submitted for review. That's why you should aim to make small submissions often. Small amounts of code are much easier to review and comment on.

Let's go through different aspects a code reviewer should assess for a complete and thorough review.

Company's coding guidelines and business requirement(s)

All code being reviewed should be checked against the company's coding guidelines and the business requirement(s) the code is addressing. All new code should adhere to the latest coding standards and best practices employed by the company.

There are different types of business requirements. These requirements include those of the business and the user/stakeholder as well as functional and implementation requirements. Regardless...

Knowing when to send code for review

Code reviews should take place when the development is complete and before the programmer of the code passes the code on to the QA department. Before any code is checked into version control, all the code should build and run without errors, warnings, or information. You can ensure this by doing the following:

  • You should run static code analysis on your programs to see whether any issues are raised. If you receive any errors, warnings, or information, then address each point raised. Do not ignore them as they can cause problems further down the line. You can access the Code Analysis configuration dialog on the Code Analysis page of the Visual Studio 2019 Project Properties tab. Right-click on your project and select Properties | Code Analysis.
  • You should also make sure that all your tests run successfully, and you should aim to have all your new code to be fully covered by normal and exceptional use cases that test...

Providing and responding to review feedback

It is worth remembering that code reviews are aimed at the overall quality of code in keeping with the company's guidelines. Feedback, therefore, should be constructive and not used as an excuse to put down or embarrass a fellow colleague. Similarly, reviewer feedback should not be taken personally and responses to the reviewer should focus on suitable action and explanation.

The following diagram shows the process of issuing a Pull Request (PR), performing a code review, and either accepting or rejecting the PR:

Providing feedback as a reviewer

Workplace bullying can be a problem, and programming environments are not immune. Nobody likes a cocky programmer who thinks they are big. So, it is important that the reviewer has good soft skills and is very diplomatic. Bear in mind that some people can easily be offended and take things the wrong way. So know who you are dealing with...

Summary

In this chapter, we have discussed the importance of performing code reviews and the complete process of getting code ready for review and responding to reviewer comments as the programmer, along with how to lead a code review and what to look for when performing a review as the code reviewer. It can be seen that there are clearly two roles in a peer code review. These are the reviewer and the reviewee. The reviewer is the person performing the code review, and the reviewee is the person whose code is being reviewed.

You have also seen how you, as a reviewer, can categorize your feedback and why soft skills are important when providing feedback to fellow programmers. And as a reviewee whose code is being scrutinized, you have seen how important it is to build upon positive and optional feedback and how important it is to act upon critical feedback.

By now, you should have a good understanding of why it is important to conduct regular code reviews, and why...

Questions

  1. What are the two roles involved in a peer code review?
  2. Who agrees on the people that will be involved in the peer code review?
  3. How can you save your reviewer time and effort prior to requesting a peer code review?
  4. When reviewing code, what kinds of things must you look out for?
  5. What are the three categories of feedback?

Further reading

Left arrow icon Right arrow icon
Download code icon Download Code

Key benefits

  • Write code that cleanly integrates with other systems while maintaining well-defined software boundaries
  • Understand how coding principles and standards enhance software quality
  • Learn how to avoid common errors while implementing concurrency or threading

Description

Traditionally associated with developing Windows desktop applications and games, C# is now used in a wide variety of domains, such as web and cloud apps, and has become increasingly popular for mobile development. Despite its extensive coding features, professionals experience problems related to efficiency, scalability, and maintainability because of bad code. Clean Code in C# will help you identify these problems and solve them using coding best practices. The book starts with a comparison of good and bad code, helping you understand the importance of coding standards, principles, and methodologies. You’ll then get to grips with code reviews and their role in improving your code while ensuring that you adhere to industry-recognized coding standards. This C# book covers unit testing, delves into test-driven development, and addresses cross-cutting concerns. You’ll explore good programming practices for objects, data structures, exception handling, and other aspects of writing C# computer programs. Once you’ve studied API design and discovered tools for improving code quality, you’ll look at examples of bad code and understand which coding practices you should avoid. By the end of this clean code book, you’ll have the developed skills you need in order to apply industry-approved coding practices to write clean, readable, extendable, and maintainable C# code.

Who is this book for?

This coding book is for C# developers, team leads, senior software engineers, and software architects who want to improve the efficiency of their legacy systems. A strong understanding of C# programming is required.

What you will learn

  • Write code that allows software to be modified and adapted over time
  • Implement the fail-pass-refactor methodology using a sample C# console application
  • Address cross-cutting concerns with the help of software design patterns
  • Write custom C# exceptions that provide meaningful information
  • Identify poor quality C# code that needs to be refactored
  • Secure APIs with API keys and protect data using Azure Key Vault
  • Improve your code's performance by using tools for profiling and refactoring
Estimated delivery fee Deliver to Hungary

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jul 17, 2020
Length: 500 pages
Edition : 1st
Language : English
ISBN-13 : 9781838982973
Vendor :
Microsoft
Category :
Languages :
Tools :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Product feature icon AI Assistant (beta) to help accelerate your learning
Estimated delivery fee Deliver to Hungary

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Publication date : Jul 17, 2020
Length: 500 pages
Edition : 1st
Language : English
ISBN-13 : 9781838982973
Vendor :
Microsoft
Category :
Languages :
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 161.97
C# 9 and .NET 5 – Modern Cross-Platform Development
€62.99
Clean Code in C#
€38.99
C# 10 and .NET 6 – Modern Cross-Platform Development
€59.99
Total 161.97 Stars icon

Table of Contents

16 Chapters
Coding Standards and Principles in C# Chevron down icon Chevron up icon
Code Review – Process and Importance Chevron down icon Chevron up icon
Classes, Objects, and Data Structures Chevron down icon Chevron up icon
Writing Clean Functions Chevron down icon Chevron up icon
Exception Handling Chevron down icon Chevron up icon
Unit Testing Chevron down icon Chevron up icon
End-to-End System Testing Chevron down icon Chevron up icon
Threading and Concurrency Chevron down icon Chevron up icon
Designing and Developing APIs Chevron down icon Chevron up icon
Securing APIs with API Keys and Azure Key Vault Chevron down icon Chevron up icon
Addressing Cross-Cutting Concerns Chevron down icon Chevron up icon
Using Tools to Improve Code Quality Chevron down icon Chevron up icon
Refactoring C# Code – Identifying Code Smells Chevron down icon Chevron up icon
Refactoring C# Code – Implementing Design Patterns Chevron down icon Chevron up icon
Assessments Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.1
(8 Ratings)
5 star 62.5%
4 star 12.5%
3 star 0%
2 star 25%
1 star 0%
Filter icon Filter
Top Reviews

Filter reviews by




Fabi Anderson Sep 07, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I really liked this book it had good information! I recommend to read it for sure! Good advice on how to refactor coding! it helped me a lot since I am a software engineer.
Amazon Verified review Amazon
Adwait Ullal Oct 19, 2020
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Disclaimer: I was provided with a free copy of this book, but the below is my objective review of the bookThis book "Clean Code in C#" is a veritable tome on best practices on writing good software.It starts right off with a comparison of good vs. bad code and then delves into the basics such as:- Coding standards (and the need for one)- SOLID principles- Exception Handling- Unit & End-to-End testingIt then tackles Advanced topics such as:- Threading & Concurrency- Designing and Securing APIs- Cross-cutting concerns- Tools to improve Code QualityThe best gem is the last chapter that deals with Code Smells at the Application, Class and Method level. There is also an additional chapter on implementing creational and structural design patterns.If the reader weren't to practice any what is written, it is certainly good food for thought and practices that one can use as your skills mature.
Amazon Verified review Amazon
Hani Jan 16, 2022
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Nice code examples, it discusses main issues regarding to C#
Amazon Verified review Amazon
geekette May 09, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The media could not be loaded. I wasn't sure who the author was aiming the book at - but if anything I'd say an intermediate level C# coder who has just been asked to review others' code.The first few chapters covered general advice (with good examples) on good code and bad code and were pretty easy but well-explained and I still learned things and it reinforced what I thought I knew and gave me the vocabulary to explain it.Towards the back, he seemed to veer into different territory with chapters on threading and concurrency and design patterns (2 subjects I always find difficult to understand as I rarely use either) but I really appreciated his chapter on walking through an example of how to secure APIs - again doesn't seem relevant to clean coding particularly but I have found it hard to find good examples of this elsewhere.His chapters on unit-testing and refactoring were great. All-in-All a good purchase and I'll read it again sometime.I prefer to study from tree-ware (I spend way too much time in front of a screen already) and I like underlining stuff in books as it helps me learn so I've added a quick video to show the book after I've finished.
Amazon Verified review Amazon
mohammad awad Nov 23, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
A must for any developer.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela