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Modernizing Your Windows Applications with the Windows App SDK and WinUI

You're reading from   Modernizing Your Windows Applications with the Windows App SDK and WinUI Expand your desktop apps to support new features and deliver an integrated Windows 11 experience

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Product type Paperback
Published in Apr 2022
Publisher Packt
ISBN-13 9781803235660
Length 514 pages
Edition 1st Edition
Languages
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Authors (2):
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Marc Plogas Marc Plogas
Author Profile Icon Marc Plogas
Marc Plogas
Matteo Pagani Matteo Pagani
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Matteo Pagani
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Table of Contents (19) Chapters Close

Preface 1. Section 1: Basic Concepts
2. Chapter 1: Getting Started with the Windows App SDK and WinUI FREE CHAPTER 3. Section 2: Modernization Journey
4. Chapter 2: The Windows App SDK for a Windows Forms Developer 5. Chapter 3: The Windows App SDK for a WPF Developer 6. Chapter 4: The Windows App SDK for a UWP Developer 7. Chapter 5: Designing Your Application 8. Chapter 6: Building a Future-Proof Architecture 9. Section 3: Integrating Your App with the Windows Ecosystem
10. Chapter 7: Migrating Your Windows Applications to the Windows App SDK and WinUI 11. Chapter 8: Integrating Your Application with the Windows Ecosystem 12. Chapter 9: Implementing Notifications 13. Chapter 10: Infusing Your Apps with Machine Learning Using WinML 14. Section 4: Distributing Your Application
15. Chapter 11: Publishing Your Application 16. Chapter 12: Enabling CI/CD for Your Windows Applications 17. Assessments 18. Other Books You May Enjoy

Moving to a new namespace

When you are building an application with UWP, your home is the Windows namespace. Every API that belongs to this ecosystem is included in one of its subnamespaces. One of the most important is Windows.UI.Xaml, which includes all the building blocks to create the UI: controls, dependency properties, styles, and so on.

When moving the UI layer to the Windows App SDK, the team had to create a different namespace, to avoid conflicts with the one built inside the operating system. As such, all the UI building blocks for WinUI are included in the Microsoft.UI.Xaml namespace. Compared to a traditional UWP application, this introduces the following two main changes:

  • If you want to port over some code you have created in UWP, you will have to change every reference to the Windows.* namespace to Microsoft.*.
  • When you create a new WinUI application, you will find the following declaration inside the App.xaml file:
    <Application>
       ...
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