.NET 5 reached its end-of-life on Tuesday, May 10, 2022. I recommend upgrading to .NET 6 or .NET 7.

Corrections for typos and other mistakes, and improvements like refactoring code.

• Improvements & Errata - list of corrections
• Fifth Edition's support for .NET 6.0
• Book links
• Five Years of Ratings

Supplementary book materials available to download as PDFs:

• Color images of the screenshots/diagrams used in this book
• Appendices for this book
  • Appendix A, Answers to the Test Your Knowledge Questions
  • Appendix B, Building Windows Desktop Apps
• The cs9dotnet5-extras repository contains articles that support the book, for example, instructions for using a Raspberry Pi to complete the coding tasks in the book.

Useful links post-publishing:

• Announcing .NET 5.0
• Announcing the Release of EF Core 5.0
• Announcing ASP.NET Core in .NET 5
• Breaking changes for migration from version 3.1 to 5.0
• C# 9.0 on the record
• .NET 5.0 Examples

Podcast interviews with me:

• The .NET Core Podcast
• Yet Another Podcase with Jesse Liberty - May 2021
• 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