C# 14 and .NET 10 – Modern Cross-Platform Development Fundamentals, 10th Edition

An easy-to-follow guide for beginners and intermediate programmers to master the concepts, real-world applications, and latest features of C# 14 and .NET 10 through hands-on exercises using Visual Studio 2026 and VS Code

Free with your book: DRM-free PDF version + access to Packt's next-gen Reader

Key Features
Explore the newest additions to the C# language, the .NET class libraries, and data modeling with Entity Framework Core
Build professional modern websites and services with ASP.NET Core, Blazor, and Minimal API services
Enhance your skills with step-by-step code examples and good practice tips
Book Description
C# and .NET remain the backbone of modern enterprise and cross-platform development. Whether you're building high-performance websites and services on Windows or Linux or desktop apps that run on Windows and macOS, the .NET ecosystem provides a mature yet constantly evolving foundation for software development. With the release of C# 14 and .NET 10, developers now have access to a more powerful toolset.

This tenth edition has been thoroughly updated to reflect the latest features. It begins with a deep grounding in object-oriented programming and then walks you through building, testing, and debugging functions, as well as managing resources with .NET libraries. You'll work with data using LINQ and serialization, handle filesystem operations, and integrate new features like numerical string comparisons and OrderedDictionary improvements. This book explains C# 14 updates, such as field modifiers, partial events, and instance constructors, in a real-world context. It also guides you in building practical projects with ASP.NET Core 10, exploring Blazor and Minimal API web services that support AOT compilation—ideal for microservices and containers.

By the end of the book, you’ll be ready to ship professional websites, services, and tools across platforms, confident in your ability to build software that's maintainable, efficient, and aligned with modern .NET development.

What you will learn
Discover the new features in .NET 10, including the NumericOrdering option and OrderedDictionary enhancements
Leverage the latest ASP.NET Core 10 features, such as OpenAPI 3.1 document generation, YAML format support, and populating XML doc comments
Use native AOT publishing for faster startup and reduced memory footprint
Build rich web user interface experiences with Blazor
Integrate databases into your applications using EF Core 10 entity models
Query and manipulate data using LINQ
Develop powerful web services with Minimal APIs
Who this book is for
This book is for beginner-to-intermediate level C# and .NET developers. While prior experience with C# or .NET is not a prerequisite, a general understanding of programming concepts will be helpful.

To learn about technologies for building modern .NET projects such as gRPC, SignalR, and GraphQL for services, or Avalonia, Blazor, and .NET MAUI for apps, read Mark's Apps and Services with .NET 10.

For more mature web development technologies like ASP.NET Core MVC, controller-based Web API services, OData services, and Umbraco CMS, check out Mark's Real-World Web Development with .NET 10.