About this ebook
AI is a powerful tool, but for critical systems, it cannot replace human judgment and oversight. Only when developers maintain genuine ownership of their code can they effectively manage technical debt and maintenance costs over the long term.
So yes, mastering programming languages and APIs matters more than ever.
However, this is not an exhaustive C# reference. Instead, this book focuses on the essential, advanced, and practical aspects of C# that require deep mastery. Unlike traditional programming guides, we emphasize "deep understanding" and encourage you to leverage AI tools to accelerate your development. In an era of AI-generated code, developers need sharper judgment regarding quality, security, and performance—and the skill to precisely direct AI to produce high-quality C# code.
Who this book is for
This book is for developers who already have a foundation in C# or another programming language and want to dive into modern C# syntax and practical details (C# 14 and .NET 10). We skip the absolute basics to focus on the advanced details that AI often overlooks or misinterprets.
This book does NOT cover programming fundamentals, such as:
- How to call functions and pass parameters
- Basic loops and control flow
- Core object-oriented concepts (classes, inheritance, polymorphism)
(Even so, Chapter 1 begins with a concise “Hello World” example, allowing developers from other languages to quickly transition into the .NET ecosystem.)
Chapters
Preface
Chapter 1: Modern environment and fundamentals
Chapter 2: Declarations and syntactic sugar
Chapter 3: Null safety
Chapter 4: Immutable design
Chapter 5: Error handling and resource management
Chapter 6: Pattern matching
Chapter 7: Generics
Chapter 8: Delegates and lambda expressions
Chapter 9: Events and the publish-subscribe pattern
Chapter 10: LINQ and functional programming
Chapter 11: Extension methods
Chapter 12: Asynchronous programming
Chapter 13: High-performance memory operations
Afterword
Discover more
About the author
Michael Tsai has more than a decade of experience in software development and technical writing, and has been recognized as a Microsoft Most Valuable Professional (MVP) in .NET for 20 consecutive years.
Author of Modern C#: Developer’s Craft in the AI Era (2026), Concurrency in .NET 10 (2026), and .NET Dependency Injection (written in Traditional Chinese, 2018).
Translator of *Brownfield Application Development in .NET* (Traditional Chinese edition, 2010).
