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
1
Part 1:Introduction to WinUI and Windows Applications
8
Part 2:Extending WinUI and Modernizing Applications
13
Part 3:Build and Deploy on Windows and Beyond

Page navigation with MVVM and DI

Until this point, the application has consisted of only a single window. Now it’s time to implement page navigation by adding a host Frame and two Page objects so we can handle adding new items or editing existing items. The new Page will be accessible from the Add/Edit Item button or by double-clicking on an item in the list.

Migrating MainWindow to MainPage

If you’re familiar with UWP app development, you should already understand page navigation. In UWP, the application consists of only a single window. At the root of the window, there is a Frame object, which hosts pages and handles the navigation between them. To achieve the same result in a desktop WinUI 3 app, we will create a new MainPage, move all the XAML content from MainWindow into MainPage, and update the App class to create a Frame as the new content of MainWindow. Then we can display the same contents by navigating to MainPage. Let’s get started:

  1. First...