Book Image

Learn WinUI 3 - Second Edition

By : Alvin Ashcraft
5 (1)
Book Image

Learn WinUI 3 - Second Edition

5 (1)
By: Alvin Ashcraft

Overview of this book

WinUI 3 takes a whole new approach to delivering Windows UI components and controls and has the ability to deliver the same features across multiple versions of Windows. Learn WinUI 3 is a comprehensive introduction to WinUI and Windows apps for anyone who is new to WinUI and XAML applications. This updated second edition begins by helping you get to grips with the latest features in WinUI and shows you how XAML is used in UI development. The next set of chapters will help you set up a new Visual Studio environment, develop a new desktop project, incorporate the Model-View-ViewModel (MVVM) pattern in a WinUI project, and develop unit tests for ViewModel commands. Next, you’ll cover the basics of data access from WinUI projects with a step-by-step approach. As you advance, you’ll discover how to leverage the Fluent Design System to design beautiful WinUI applications. You’ll also explore the contents and capabilities of the Windows Community Toolkit and learn how to create cross-platform apps with markup and code from your project using Uno Platform. The concluding chapters will teach you how to build, debug, and deploy apps to the Microsoft Store. By the end of this book, you’ll have learned how to build WinUI applications from scratch and how to modernize existing desktop apps using WinUI 3 and the Windows App SDK.
Table of Contents (20 chapters)
Free Chapter
Part 1:Introduction to WinUI and Windows Applications
Part 2:Extending WinUI and Modernizing Applications
Part 3:Build and Deploy on Windows and Beyond

What is the Fluent Design System?

The Fluent Design System is a cross-platform system that helps developers create beautiful, intuitive applications. The website for Fluent Design ( has dedicated pages with resources for developers on many platforms:

  • Android
  • iOS
  • macOS
  • Web
  • Windows
  • Cross-platform (React Native)


Microsoft has started releasing their Fluent 2 design guidance at You can think of Fluent 1 styles as Windows 10 style, whereas Fluent 2 style is similar to the look and feel of Windows 11. At the time of this writing, the Fluent 2 guidance has only been published for React web applications. Other platforms are not yet available.

Fluent Design aims to be simple and intuitive. While it maintains its design philosophy across platforms, it also adapts aspects of its design to feel native on every platform. In Chapter 1, Introduction to WinUI, we discussed the origins...