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

Understanding data binding in WinUI

In the previous chapter, you saw some simple examples of data binding, using both the Binding and x:Bind markup extensions. Let’s dissect some of the components that allow the View to receive updates when the View Model data changes.

What are markup extensions?

An in-depth discussion of markup extensions is beyond the scope of this introductory book. In brief, they are a class that executes some logic to return a value to the XAML parser. You can identify their use in XAML by looking for some markup inside curly braces. Take this example of Binding in the Text property of a TextBlock:

<TextBlock Text="{Binding Path=Name, Mode=TwoWay}"/>

From this, you can derive that there is a markup extension class named Binding and that two of its properties are Path and Mode. This markup extension takes these properties, resolves a value, and returns it to the XAML parser for display in the application’s View.