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

Leveraging x:Bind with events

In the previous chapter, we bound ViewModel commands to the Command properties of the Add Item and Delete Item buttons. This works great and keeps the ViewModel decoupled from the UI, but what happens if you need to handle an event that isn’t exposed through a Command property? For this scenario, you have two options:

  • Use a custom behavior such as EventToCommandBehavior in the .NET MAUI Community Toolkit. This allows you to wire up a command in the ViewModel to any event.
  • Use x:Bind in the view to bind directly to an event handler on the view model.

In this application, we will use x:Bind. This option will provide compile-time type checking and added performance. If you want to learn more about the .NET MAUI Community Toolkit, you can read the documentation on Microsoft Learn: https://learn.microsoft.com/dotnet/communitytoolkit/maui/behaviors/event-to-command-behavior.

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