C#实现Windows Runtime详解：专业指南

Windows

Runtime

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《Microsoft Press Windows Runtime via C#》是一本由Jeffrey Richter和Maarten van de Bospoort合著的专业书籍，由Microsoft Press出版，隶属于微软公司的一个部门。这本书专为深入理解和应用Windows Runtime（WinRT）技术，特别是通过C#编程语言，提供了详尽的指导和实践。 Windows Runtime是一种跨平台的开发框架，设计用于Windows 8及以后版本的系统，旨在实现丰富的、高性能的应用体验，尤其是在触控设备上。它提供了一种全新的应用程序模型，使得开发者能够构建原生应用，同时利用现代UI、数据模型和网络通信技术，实现与Windows Store应用相同的用户体验。本书涵盖了以下关键知识点： 1. WinRT基础：首先介绍了WinRT的核心概念，包括它的设计目标、组件化架构以及如何在C#中使用它来开发跨平台的Windows应用程序。 2. C#编程与WinRT：详细讲解了如何在C#中有效地利用WinRT API，包括类库、接口和控件的使用，以及如何处理异步编程和事件处理。 3. UI设计：书中展示了如何创建响应式、直观的用户界面，包括XAML和C#代码的结合，以构建美观且功能强大的Windows Store应用程序。 4. 数据管理：介绍如何使用WinRT的数据模型，如ObservableCollections和DependencyProperties，以实现高效的数据绑定和状态管理。 5. 网络和通信：讨论了WinRT中的网络编程，包括HTTP通信、WebSockets和Azure服务的集成，确保应用程序能连接到云端并进行数据交换。 6. 安全性与隐私：强调了在WinRT应用中处理用户数据和隐私的最佳实践，确保应用程序符合Windows Store的安全要求。 7. 性能优化：提供实用的技巧和策略，帮助开发者提高应用程序的运行效率，减少内存消耗和CPU占用。 8. 实战项目：书中包含多个实例项目，从入门级到进阶，帮助读者逐步掌握WinRT开发的实际操作。此外，该书还包含了版权声明、国际标准书号(ISBN)以及Microsoft Press的支持联系方式，提醒读者版权注意事项，并鼓励读者对书籍内容给予反馈。《Microsoft Press Windows Runtime via C#》是一本深入研究和学习WinRT技术，特别是C#开发者的实用指南，对于希望在Windows平台上开发高质量应用程序的开发人员具有很高的价值。

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xvii

Introduction

he Microsoft Windows operating system offers many features and capabilities to

application developers. Developers consume these features by calling Windows

Runtime (WinRT) APIs. This book explores many of the Windows Runtime APIs and how

to best use them from within your own applications. An emphasis is placed on using

WinRT APIs from Windows Store apps. Windows Store app developers will also nd a

lot of architectural guidance as well as performance and debugging advice throughout

all the book’s chapters.

In addition, since many WinRT APIs are available to desktop apps too, much of this

book is also useful to desktop app developers. In particular, desktop app developers

will get a lot from the chapters that cover les, folders, streams, networking, toasts, and

the clipboard.

Although WinRT APIs can be invoked from many different programming lan guages—

including JavaScript, native C++, and Visual Basic—this book focuses on consuming

them from C# because this language is expected to be the most-used language for

consuming WinRT APIs due to its popularity with Microsoft-centric developers and the

enormous productivity the language provides. However, if you decide to use a differ-

ent programming language, this book still provides a lot of information and guidance

about the WinRT APIs, and this information is useful regardless of the programming

language used to invoke them.

Who should read this book

This book is useful to developers building applications for the Windows operating

system. It teaches core WinRT API concepts and how to architect and design Windows

Store apps, and it provides performance and debugging tips throughout. Much of the

information presented in this book is also useful to developers building desktop apps

for Windows.

Assumptions

This book expects that you have at least a minimal understanding of the Microsoft .NET

Framework, the C# programming language, and the Visual Studio integrated develop-

ment environment. For more information about C# and the .NET Framework, consider

reading Jeffrey Richter’s CLR via C#, Fourth Edition (Microsoft Press, 2012).

xviii Introduction

Who should not read this book

This book does not focus on user-interface concepts and how to design an app’s user

interface using technologies such as XAML or HTML. For information about using XAML

to build user interfaces, consider reading Charles Petzold’s Programming Windows:

Writing Windows 8 Apps with C# and XAML, Sixth Edition (Microsoft Press, 2013).

Organization of this book

This book is divided into two sections. Part I, “Core concepts,” focuses on concepts that

all WinRT and Windows Store app developers must know.

■

Chapter 1, “Windows runtime primer,” denes the WinRT type system, its princi-

ples, and how to consume it from various programming languages. This chapter

also addresses the importance of understanding asynchronous programming,

which is pervasive throughout the WinRT API.

■

Chapter 2, “App packaging and deployment,” concentrates on the les that

make up a Windows Store app, how those les get combined into a package le,

and how the package le ultimately gets installed on users’ PCs. Package les

are a new core concept in Windows, and understanding them is critical to being

successful when using WinRT APIs.

■

Chapter 3, “Process model,” explains the core concepts related to how Windows

Store apps execute. The chapter focuses on app activation, threading models,

main view and hosted view windows, XAML page navigation, efcient memory

management, process lifetime management, and debugging. All Windows Store

apps must adhere to the architecture described in this chapter.

Part II, “Core Windows facilities,” contains chapters that explore various Windows

facilities. The topics presented are key topics that almost all Windows Store app de-

velopers must know. Although the chapters can be read in any order, I recommend

reading them in order because later chapters tend to reference topics presented in

earlier chapters. Most of the chapters in Part II are about moving data around using

settings, les, folders, streams, networking, and data sharing. However, there are also

chapters explaining how apps can update tile content and display toasts. And there is

a chapter explaining how apps can execute code when the user is not interacting with

the app. The nal chapter shows how to submit your app to the Windows Store and

how to leverage the Windows Store commerce engine so that you can get paid for your

development efforts.

Introduction xix

Code samples

Most of the chapters in this book include code snippets showing how to leverage the

various Windows features. Complete code samples demonstrating the features and

allowing you to experiment with them can be downloaded from the following page:

http://Wintellect.com/Resource-WinRT-Via-CSharp

Follow the instructions to download the “WinRT via CS” .zip le.

Note In addition to the code samples, your system must be running

Windows 8.1 and must have Visual Studio 2013 installed.

The Visual Studio solution contains several projects. Each project starts with a two-

digit number that corresponds to the book’s chapter. For example, the “05a-Storage”

project contains the code that accompanies Chapter 5, “Storage les and folders.”

Acknowledgments

I couldn’t have written this book without the help and technical assistance of many

people. In particular, I’d like to thank my family. The amount of time and effort that

goes into writing a book is hard to measure. All I know is that I could not have pro-

duced this book without the support of my wife, Kristin, and my two sons, Aidan and

Grant. There were many times when we wanted to spend time together but were un-

able to due to book obligations. Now that the book project is completed, I really look

forward to adventures we will all share together.

Of course, I also have to thank my coauthor, Maarten van de Bospoort. This book

would not have existed at all if it were not for Maarten. Maarten started with my origi-

nal course slides and demo code and turned that into the chapter text. Because books

go into more technical depth and detail than courses, he had to research many areas

in further depth and embellish the chapters quite a bit. Maarten would then hand the

chapters over to me, and I would polish them by reorganizing a bit and add my own

personal air. It was a pleasure working with Maarten as he was always open to sug-

gestions, and it was also really nice to have someone to discuss book organization and

content with.

For technical content, there are many people on Microsoft’s Windows team who

had one-on-one meetings with me so that I could learn more about the features and

xx Introduction

their goals. In particular, I had two six-hour meetings with Howard Kapustein discuss-

ing packages, app containers, deployment, bundles, and so on. Talks with him changed

my whole view of the system, and the chapters in this book reect what I learned from

these discussions. John Sheehan also spoke with me at length about package capabili-

ties, declarations, and the resource system, which changed my whole view about app

activation and contracts. Many others also had conversations with me about the WinRT

type system, les, networking, background tasks, sharing, the Windows Store, tiles and

toasts, and more. These people include Chris Anthony, Tyler Beam, Manoj Biswas, Arik

Cohen, David Fields, Alain Gefaut, Chris Guzak, Guanghui He, Scott Hoogerwerf, Suhail

Khalid, Salahuddin Khan, Nathan Kuchta, Jon Lam, Nancy Perks, Hari Pulapaka, Brent

Rector, Jamie Schwartz, Peter Smith, Ben Srour, Adam Stritzel, Henry Tappen, Pedro

Teixeira, Dave Thaler, Marc Wautier, Sarah Waskom, and Terue Yoshihara.

As for editing and producing the book, I truly had some fantastic people helping

me. Christophe Nasarre, who I’ve worked with on several book projects, has once again

done just a phenomenal job ensuring that technical details are explained accurately. He

has truly had a signicant impact on the quality of this book. As always, the Microsoft

Press team is a pleasure to work with. I’d like to extend a special thank you to Devon

Musgrave and Carol Dillingham. Also, thanks to Curt Philips, Roger LeBlanc, and Andrea

Fox for their editing and production support.

Errata & book support

We’ve made every effort to ensure the accuracy of this book and its companion con-

tent. Any errors that have been reported since this book was published are listed at:

http://aka.ms/WinRTviaCsharp/errata

If you nd an error that is not already listed, you can report it to us through the

same page.

If you need additional support, email Microsoft Press Book Support at:

mspinput@microsoft.com.

Please note that product support for Microsoft software is not offered through the

addresses above.

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