精通Serverlight：Silverlight深度探索

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"Professional Serverlight 5 是一本深入探讨Serverlight技术的专业英文书籍，适合对微软技术有深入了解的读者阅读。书中涵盖了从基础到高级的各种Serverlight开发主题，旨在帮助读者掌握这一强大的富互联网应用程序（RIA）开发平台。" 本书包含以下主要章节，详细讲解了Serverlight的核心概念和技术： 1. **Chapter 1: Introducing Silverlight** - 介绍了Silverlight的基本概念，包括它的起源、用途以及在RIA开发中的重要性，同时也可能涉及到与Flash的竞争和优势。 2. **Chapter 2: XAML** - XAML是Silverlight中用于描述用户界面的主要标记语言，本章将详细介绍XAML语法、元素和属性，以及如何通过XAML来创建复杂的UI。 3. **Chapter 3: Layout** - 讲解Silverlight中的布局管理，包括不同的面板控件（如Grid、StackPanel等）和如何控制元素的布局和排列。 4. **Chapter 4: Dependency Properties and Routed Events** - 这一章深入探讨了依赖属性和路由事件，这是Silverlight中实现数据绑定和事件传播的关键机制。 5. **Chapter 5: Elements** - 阐述了Silverlight中各种基础元素的使用，如Button、TextBox等，并展示了如何自定义和扩展元素。 6. **Chapter 6: The Application Model** - 解释了Silverlight应用模型，包括启动、生命周期管理和资源管理。 7. **Chapter 7: Navigation** - 介绍了Silverlight的导航框架，如何构建多页应用，以及页面之间的导航逻辑。 8. **Chapter 8: Shapes and Transforms** - 讨论了基本形状的使用，以及如何通过变换（如旋转、缩放、平移）来增强图形表现。 9. **Chapter 9: Brushes, Bitmaps, and Printing** - 详细讲解了填充和描边的画刷，位图操作，以及如何在Silverlight中实现打印功能。 10. **Chapter 10: Animation Basics** - 开始介绍动画系统，包括时间线、关键帧和基本动画类型。 11. **Chapter 11: Advanced Animation** - 深入探讨更高级的动画技术，如路径动画、故事板和交互式动画。 12. **Chapter 12: Sound, Video, and Deep Zoom** - 讲解了音频和视频的集成，以及Deep Zoom技术，用于创建沉浸式的视觉体验。 13. **Chapter 13: Silverlight 3D** - 介绍了如何在2D环境中实现3D效果，包括3D图形和空间交互。 14. **Chapter 14: Styles and Behaviors** - 介绍了样式和行为的概念，如何用它们来统一应用外观并实现非侵入式的行为添加。 15. **Chapter 15: Control Templates** - 阐述了控制模板的使用，允许开发者自定义UI控件的外观和交互。 16. **Chapter 16: Multithreading** - 详细讲解了多线程编程在Silverlight中的应用，包括异步操作和线程安全。 17. **Chapter 17: Browser Integration** - 讨论了Silverlight与浏览器的交互，包括JavaScript互操作性和安全限制。 18. **Chapter 18: Out-of-Browser Applications** - 介绍了离线应用的创建，如何使Silverlight应用能在桌面环境下运行。 19. **Chapter 19: ASP.NET Web Services** - 展示了如何与ASP.NET Web服务进行通信，实现服务器端数据的获取和更新。 20. **Chapter 20: Data Binding** - 详细讲解了数据绑定机制，包括双向绑定、数据上下文和数据转换器。 21. **Chapter 21: Data Controls** - 阐述了内置的数据控件，如ListBox、DataGrid等，以及如何用它们来展示和操作数据。 22. **Chapter 22: F** - 可能是未提供的部分，但通常会继续讨论更多高级主题或实践案例。本书通过丰富的实例和详尽的解释，为读者提供了一个全面的Serverlight学习资源，无论你是初学者还是经验丰富的开发者，都能从中受益匪浅。

CHAPTER 1  INTRODUCING SILVERLIGHT

(and download a beta) from www.microsoft.com/visualstudio/lightswitch. Or, check out Pro Business

Applications with Silverlight 5 (Apress, 2011), which has a dedicated chapter on the subject.

Visual Studio vs. Expression Blend

If you’re still trying to understand how Visual Studio and Expression Blend stack up, here’s a quick

overview:

• Visual Studio: It has everything you need to develop Silverlight applications, with a

visual designer for Silverlight pages. Using this designer, you can drag, drop, and

draw your user interface into existence (which isn’t always the best idea), and you

can get a live preview of what it looks like (which is terrifically useful).

• Expression Blend: It provides the rich support for creating Silverlight user

interface, with visual tools that surpass Visual Studio. For certain types of user

interface grunt work (for example, creating a nice gradient fill), it’s a tremendous

help. Expression Blend also supports a fun application prototyping tool called

SketchFlow and includes a decent coding editor that’s designed to look like Visual

Studio. However, it lacks many advanced and important development tools, such

as debugging, code refactoring, and project source control.

 Note Visual Studio 2010 includes full support for creating Silverlight 3 projects. But to create Silverlight 5

projects, you need the Silverlight 5 Tools for Visual Studio 2010. And if you plan to use Expression Blend with

Silverlight 5, you’ll (currently) need to use a beta version called the Expression Blend Preview for Silverlight 5. You

can download both tools from the Microsoft Download Center (search for Silverlight 5 at

www.microsoft.com/download).

This book assumes you’re working primarily with Visual Studio. You’ll get occasional tips for

Expression Blend (and other Expression products that work with Silverlight, including the Expression

Design drawing tool and Expression Encoder video encoding tool). But if you really want to master

Expression Blend, you should consider a dedicated book on the subject, spend an afternoon

experimenting, or take a look through Microsoft’s Expression Blend training videos at

http://expression.microsoft.com/cc136535.aspx.

Understanding Silverlight Websites

You can create two types of Silverlight websites in Visual Studio or Expression Blend:

• An ordinary website with HTML pages: In this case, the entry point to your

Silverlight application is a basic HTML file that includes a Silverlight content

region.

CHAPTER 1  INTRODUCING SILVERLIGHT

• ASP.NET website: In this case, Visual Studio creates two projects—one to contain

the Silverlight application files and one to hold the server-side ASP.NET website

that will be deployed alongside your Silverlight files. The entry point to your

Silverlight application can be an ordinary HTML file, or it can be an ASP.NET web

page that includes server-generated content.

So, which approach is best? No matter which option you choose, your Silverlight application will

run the same way—the client browser will receive an HTML document, which will include a Silverlight

content region, and the Silverlight code will run on the local computer, not the web server. However, the

ASP.NET web approach makes it easier to mix ASP.NET and Silverlight content. This is usually a better

approach in the following cases:

• You want to create a website that contains both ASP.NET web pages and

Silverlight-enhanced pages.

• You want to create a Silverlight application that calls a web service, and you want

to design the web service at the same time (and deploy it to the same web server).

• You want to generate Silverlight content indirectly, using specialized ASP.NET

web controls.

On the other hand, if you don’t need to write any server-side code, there’s little point in creating a

full-fledged ASP.NET website. Many of the Silverlight applications you’ll see in this book use basic

HTML-only websites. The examples only include ASP.NET websites when they need specific server-side

features. For example, the examples in Chapter 20 use an ASP.NET website that includes a web service.

This web service allows the Silverlight application to retrieve data from a database on the web server, a

feat that would be impossible without server-side code. You’ll learn how to design an ASP.NET web

service for Silverlight in Chapter 19.

ADDING SILVERLIGHT CONTENT TO AN EXISTING WEBSITE

A key point to keep in mind when considering the Silverlight development model is that in many cases

you’ll use Silverlight to augment the existing content of your website, which will still include generous

amounts of HTML, CSS, and JavaScript. For example, you might add a Silverlight content region that

shows an advertisement or allows an enhanced experience for a portion of a website (such as playing a

game, completing a survey, interacting with a product, or taking a virtual tour). You may use Silverlight-

enhanced pages to present content that’s already available in your website in a more engaging way or to

provide a value-added feature for users who have the Silverlight plug-in.

Of course, it’s also possible to create a Silverlight-only website, which is a somewhat more daring

approach. The key drawback is that Silverlight isn’t installed as widely as other web technologies such as

Flash, and doesn’t support legacy clients such as those running the Windows ME or Windows 2000

operating system. As a result, Silverlight doesn’t have nearly the same reach as ordinary HTML. Many

businesses that are adopting Silverlight are using it to distinguish themselves from other online

competitors with cutting-edge content, but they aren’t abandoning their traditional websites.

CHAPTER 1  INTRODUCING SILVERLIGHT

• App.xaml and App.xaml.cs: These files configure your Silverlight application. They

allow you to define resources that will be made available to all the pages in your

application (see Chapter 2), and they allow you react to application events such as

startup, shutdown, and error conditions (see Chapter 6). In a newly generated

project, the startup code in the App.xaml.cs file specifies that your application

should begin by showing MainPage.xaml.

• MainPage.xaml: This file defines the user interface (the collection of controls,

images, and text) that will be shown for your first page. Technically, Silverlight

pages are user controls—custom classes that derive from UserControl. A Silverlight

application can contain as many pages as you need—to add more, simply choose

Project

 Add New Item, pick the Silverlight User Control template, choose a file

name, and click Add.

• MainPage.xaml.cs: This file includes the code that underpins your first page,

including the event handlers that react to user actions.

 Note For the first few chapters of this book, you’ll create applications that have just a single page. In Chapter 6,

you’ll take a closer look at the application logic that sets your initial page. In Chapter 7, you’ll break free of this

constraint altogether and learn the techniques you need to combine pages and navigate from one to another.

Along with these four essential files, there are a few more ingredients that you’ll find only if you dig

around. Under the Properties node in the Solution Explorer, you’ll find a file named AppManifest.xml,

which lists the assemblies that your application uses. You’ll also find a file named AssemblyInfo.cs,

which contains information about your project (such as its name, version, and publisher) that’s

embedded into your Silverlight assembly when it’s compiled. Neither of these files should be edited by

hand—instead, they’re modified by Visual Studio when you add references or set project properties.

Last, the gateway to your Silverlight application is an automatically generated but hidden HTML test

page named ProjectNameTestPage.html. So if your project is SilverlightApplication1, that page is named

SilverlightApplication1TestPage.html (see Figure 1-3). To see this file, make sure you’ve compiled your

application at least once. Then, click the Show All Files button at the top of the Solution Explorer, and

expand the Bin\Debug folder (which is where your application is compiled). The test page file includes

an <object> element that creates the Silverlight content area. You’ll take a closer look at it later in this

chapter.

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