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

Anatomy of a WinUI in Desktop project

Now that we have a new empty WinUI project loaded in Visual Studio, let’s examine the different components. In Solution Explorer, you will see two XAML files, named App.xaml and MainWindow.xaml. We will start by discussing the purpose of each of these. Both files can be seen in the following screenshot of Solution Explorer:

Figure 2.5 – The new WinUI solution in Solution Explorer

Figure 2.5 – The new WinUI solution in Solution Explorer

Reviewing App.xaml

The App.xaml file, as its name implies, stores resources available across the entire application. If you have any templates or styles that will need to be used across multiple windows, they should be added at the Application level.

The new project’s App.xaml file will contain some initial markup, as illustrated in the following code snippet: