IMPORTANT! Common Mistakes, Improvements, and Errata aka list of corrections

Repository for the Packt Publishing book titled "C# 14 and .NET 10 - Modern Cross-Platform Development Fundamentals" by Mark J. Price

FAQs

What's new in this edition? You can read a detailed list of changes between the 9th and 10th editions.

• C# 14 and .NET 10 - Modern Cross-Platform Development Fundamentals, Tenth Edition
• Free PDF/ePub of the book and how to contact the publisher Packt
• Author's books
• .NETPro Newsletter
• Chapters and code solutions
• Code solutions for Visual Studio and VS Code
• Important
• Miscellaneous
  • Microsoft Certifications
  • Microsoft .NET community support
  • Interviews with me

The next-gen online Packt Reader and a free PDF/ePub copy of this book are included with your purchase. Visit https://packtpub.com/unlock, then use the search bar to find this book by name. Double-check the edition shown to make sure you get the right one.

Apply for free PDF after purchase of any Packt book including paperback and Kindle: https://www.packtpub.com/page/companion-ebook

For questions about book pricing, distribution, and so on, please contact the publisher Packt at the following email address: customercare@packt.com

My author page on Amazon: https://www.amazon.com/Mark-J-Price/e/B071DW3QGN/

All of my books on Packt's website: https://subscription.packtpub.com/search?query=mark+j.+price

My author page on Goodreads: https://www.goodreads.com/author/show/14224500.Mark_J_Price

Subscribe to .NETPro to receive .NET tips in your inbox: https://landing.packtpub.com/dotnetpronewsletter/

Catch up on previous newsletters in the archive: https://packtnetpro.substack.com/archive

Introduction

• Chapter 1 Hello C#, Welcome .NET! code/Chapter01

Language

• Chapter 2 Speaking C#: code/Chapter02
• Chapter 3 Controlling Flow, Converting Types, and Handling Exceptions: code/Chapter03
• Chapter 4 Writing, Debugging, and Testing Functions: code/Chapter04
• Chapter 5 Building Your Own Types with Object-Oriented Programming: code/Chapter05
• Chapter 6 Implementing Interfaces and Inheriting Classes: code/Chapter06

Libraries

• Chapter 7 Packaging and Distributing .NET Types: code/Chapter07
• Chapter 8 Working with Common .NET Types: code/Chapter08
• Chapter 9 Working with Files, Streams, and Serialization: code/Chapter09
• Chapter 10 Working with Data Using Entity Framework Core: code/Chapter10
• Chapter 11 Querying and Manipulating Data Using LINQ: code/Chapter11

Modern Web Development

• Chapter 12 Introducing Modern Web Development Using .NET: code/ModernWeb
  • code/ModernWeb/nuget.config
  • code/ModernWeb/Directory.Packages.props
• Chapter 13 Building Websites Using ASP.NET Core: code/ModernWeb/Northwind.Web
• Chapter 14 Building Interactive Web Components Using Blazor: code/ModernWeb/Northwind.Blazor
• Chapter 15 Building and Consuming Web Services: code/ModernWeb/Northwind.MinimalApi

Appendices

• Appendix A, Answers to the Test Your Knowledge Questions
• Appendix B, Setting Up Your Development Environment
• Appendix C, Looking for help and PDF
• Appendices are included with your purchase. Visit https://packtpub.com/unlock, then use the search bar to find this book by name. Double-check the edition shown to make sure you get the right one.

Figures for all of the code solution folders.

VS Code now has an extension named C# Dev Kit that includes a solution explorer so it can better work with Visual Studio solution files. Visual Studio 2026 for Windows, VS Code + C# Dev Kit, and Rider can use the same code solution files and projects for each chapter, found here: /code.

For VS Code: To use the chapter solution files with VS Code, install the C# Dev Kit extension. Then in VS Code, open the ChapterNN folder that contains a ChapterNN.slnx solution file and wait for the SOLUTION EXPLORER pane to appear at the bottom of the EXPLORER. You can drag and drop to reorder the panes to put SOLUTION EXPLORER at the top. Learn more about C# Dev Kit at the following link: https://devblogs.microsoft.com/visualstudio/announcing-csharp-dev-kit-for-visual-studio-code/

Warning! If you use both Visual Studio and VS Code to open these solutions, be aware that the build process can conflict. This is because Visual Studio has its own non-standard build server that is different from the standard build server used by .NET SDK CLI. My recommendation is to only have a solution open in one code editor at any time. You should also clean the solutions between opening in different code editors. For example, after closing the solution in one code editor, I delete the bin and obj folders before then opening in a different code editor.

Corrections for typos and other mistakes and improvements like refactoring code. Useful links to other related material.

• Command-Lines page lists all commands as a single line that can be copied and pasted to make it easier to enter commands at the prompt.
• Book Links
• Common Mistakes, Improvements, and Errata aka list of corrections
• Tenth edition's support for .NET 11

Announcing the New Foundational C# Certification with freeCodeCamp: https://devblogs.microsoft.com/dotnet/announcing-foundational-csharp-certification/

Microsoft used to have professional exams and certifications for developers that covered skills like C# and ASP.NET. Sadly, they have retired them all. These days, the only developer-adjacent exams and certifications are for Azure or Power Platform, as you can see from the certification poster: https://aka.ms/traincertposter

• .NET Developer Community
• .NET Tech Community Forums for topic discussions
• Q&A for .NET to get your questions answered
• Technical questions about the C# programming language
• If you'd like to apply to be a reviewer

Podcast interviews with me:

• The Modern .NET Show - February 20, 2026
• The Modern .NET Show - January 26, 2024
• The .NET Core Podcast - March 3, 2023
• Yet Another Podcast with Jesse Liberty - December 2022
• The .NET Core Podcast - February 4, 2022
• Yet Another Podcast with Jesse Liberty - May 2021
• The .NET Core Podcast - February 7, 2020
• Yet Another Podcast with Jesse Liberty - February 2020
• Packt Podcasts

Written interviews with me:

• C# 9 and .NET 5: Book Review and Q&A
• Q&A with Episerver's Mark J. Price, author of C# 9 and .NET 5 - Modern Cross-Platform Development