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

MVVM for Maintainability and Testability

When building XAML-based applications, one of the most important design patterns to learn is the MVVM pattern. MVVM provides a clear separation of concerns between the XAML markup in the view and the C# code in the View Model using data binding. With this separation comes ease of maintenance and testability. The View Model classes can be tested without taking a dependency on the underlying User Interface (UI) platform. For large teams, another benefit of this separation is that changing the XAML enables UI designers to work on the UI independently of developers who specialize in writing the business logic and the backend of the application.

In this chapter, you will learn about the following concepts:

  • Fundamentals of the MVVM design pattern
  • Popular MVVM frameworks
  • Implementing MVVM in WinUI applications
  • Handling View Model changes in the view
  • Event handling in MVVM
  • Streamline View Model implementations with the...