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  • Book Overview & Buying Modernizing Your Windows Applications with the Windows App SDK and WinUI
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Modernizing Your Windows Applications with the Windows App SDK and WinUI

Modernizing Your Windows Applications with the Windows App SDK and WinUI

By : Pagani, Plogas
4.4 (9)
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Modernizing Your Windows Applications with the Windows App SDK and WinUI

Modernizing Your Windows Applications with the Windows App SDK and WinUI

4.4 (9)
By: Pagani, Plogas

Overview of this book

If you're a developer looking to improve and modernize your existing LOB applications to leverage modern Windows features without having to rewrite the entire application from scratch, this book is for you. You’ll learn how to modernize your existing Windows Forms, WPF, and UWP applications and enrich them with the latest Windows features. Starting with sample LOB applications that cover common scenarios, you'll learn the differences between various components and then focus on design features for improved visual aspects like accessibility and responsive layouts. The book shows you how to enhance your existing applications using Windows App SDK components and various Windows APIs, resulting in deeper integration with the operating system. You’ll be taking a closer look at WinML, which enables Windows applications to evaluate machine learning models offline and leverage the power of your machine, or notifications, to engage with your users in a more effective way. You’ll also learn how to make your application deployment-ready by distributing it using various platforms like the Microsoft Store or websites. By the end of this Windows book, you'll be able to create a migration plan for your existing Windows applications and put your knowledge to work by enhancing your application with new features and integrating them with the Windows ecosystem.
Table of Contents (19 chapters)
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1
Section 1: Basic Concepts
3
Section 2: Modernization Journey
9
Section 3: Integrating Your App with the Windows Ecosystem
14
Section 4: Distributing Your Application

Using the dispatcher

WinUI, like WPF, uses a single-thread model to manage the UI. This means that, in your code, you can interact with the controls included in your window only from the UI thread. Consider, for example, the following code:

Task.Run(() =>
{
    //do some heavy work
    myTextBlock.Text = result;
});

By using Task.Run(), we are forcing the code to be executed on a background thread. However, if you run this snippet, you will get an exception, as shown in the following screenshot:

Figure 3.4 – The exceptions raised when you try to access the UI from a different thread

This is expected, since we're trying to access UI control from a background thread. To manage these scenarios, all the .NET UI platforms use the concept of a dispatcher, which, as the name suggests, is able to dispatch a specific action from a different thread to the UI thread.

In WPF, the dispatcher is implemented...

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