The 10th edition of the book covers the latest language features in C# 9 and .NET 5, along with in-depth behind-the-scenes discussions designed to enhance developers' critical thinking skills when it comes to their craft. The book covers ASP.NET Core, Entity Framework Core and more, along with the latest updates to the Unified .NET Platform, from performance improvements for Windows desktop apps in .NET 5 and updates to the XAML tooling to expanded coverage of data files and data processing techniques. All code samples have been rewritten to take advantage of the latest release C# 9.