Silverlight初学者指南：微软技术入门

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"SilverlightBeginer - 一本关于Silverlight技术的英文入门书籍，由Shannon Horn撰写，适合初学者阅读。" 微软的Silverlight是一款已不再更新的技术，但它在过去的几年里对富互联网应用程序（RIA）的发展产生了深远影响。本书"Microsoft Silverlight 3: A Beginner's Guide"是针对那些想要了解和学习Silverlight开发的初学者编写的。作者Shannon Horn是一位拥有超过14年经验的软件开发者，专注于Windows和基于Web的解决方案，同时也是多个行业活动的演讲嘉宾。这本书的内容可能涵盖了以下几个关键知识点： 1. **Silverlight基础**：书中可能会介绍Silverlight是什么，它是如何工作的，以及为什么它对创建交互式Web内容至关重要。Silverlight作为一个插件，允许开发者创建丰富的多媒体体验，包括动画、视频和图形。 2. **安装与环境配置**：对于初学者，书中可能会指导读者如何在他们的机器上安装Silverlight开发工具，如Visual Studio，以及设置必要的开发环境。 3. **XAML语言**：XAML（Extensible Application Markup Language）是Silverlight的主要设计语言，用于构建用户界面。书中的这部分可能会深入讲解XAML的基本语法和元素，以及如何通过XAML来布局和控制UI元素。 4. **编程基础**：Silverlight支持C#和VB.NET作为后台代码语言。书中会介绍这两种语言的基础知识，以及如何将它们与XAML结合使用，实现数据绑定和事件处理。 5. **动画与媒体播放**：Silverlight的一个强大特性是其内置的动画系统和媒体播放支持。书可能会讲解如何创建和控制动画，以及如何嵌入和播放音频和视频。 6. **数据绑定与服务交互**：Silverlight应用程序可以与各种后端数据源进行交互，如Web服务或数据库。这部分可能会涵盖数据绑定的概念，以及如何与RESTful服务或其他Web服务进行通信。 7. **Silverlight应用部署**：书中还会涉及到如何将完成的Silverlight应用程序部署到网站，以便用户可以访问。 8. **实战项目**：为了帮助巩固理论知识，书中可能会包含一些实际项目示例，让读者通过实践来学习Silverlight开发。尽管Silverlight现在已经不是最新的技术，但对于理解RIA的原理和WPF（Windows Presentation Foundation）等现代技术仍有价值，特别是对于那些想追溯技术发展历程或研究旧项目的人来说。不过，对于新的Web开发，开发者通常转向HTML5、CSS3和JavaScript框架，如React或Angular。

Acknowledgments

’d like to thank Roger and Joya for being patient with me in completing this book, and

I’d also like to thank Robert for all of his work in editing.

xviii Microsoft Silverlight 3: A Beginner’s Guide

On the opposite side of the coin, another client contacted me to design a Silverlight

user interface for an existing application that utilized an ASP.NET user interface. Due

to the existing ASP.NET user interface, some of the framework for the redesign was

already in place. However, the improved Silverlight UI took advantage of better graphics

and integrated media. The code that resided in the ASP.NET code-behind pages had to

be migrated to the Silverlight code-behind pages. Thus, the code had to undergo some

changes because not all the code was applicable to Silverlight or a client execution

environment. Additionally, the existing ASP.NET pages communicated directly with

business classes and then, in turn, the database and the application relied on automatic

postbacks. In a Silverlight application, there are no automatic postbacks; hence, the code

had to be modified to accommodate this change, and WCF services had to be created on

the server to fulfill requests coming from the client.

Early chapters in this book introduce Silverlight and the path of technologies leading

up to the development of Silverlight. Chapters progress to illustrate networking and

accessing data with Silverlight. Finally, this book discusses how Silverlight can be used to

display graphics and media. Here’s a breakdown of what you’ll encounter in each chapter:

● Chapter 1 gives a detailed overview of Silverlight and the history of Microsoft

technologies that led up to the development of Silverlight. This chapter also introduces

a simple application created using Silverlight and illustrates the display of the

application in various browsers.

● Chapter 2 ventures out to describe and illustrate the latest technologies available in

the .NET Framework, version 3.5. These technologies include Windows Presentation

Foundation (WPF), Windows Communication Foundation (WCF), Windows Workflow

Foundation (WF), Windows CardSpace, ASP.NET AJAX, and Language Integrated

Query (LINQ).

● Chapter 3 takes a much closer look at the architecture of a Silverlight application

as created using Visual Studio 2008. Topics in this chapter include how to install

Silverlight 3, a quick overview of Visual Studio 2008 and Expression Blend, the most

common languages used to code Silverlight applications, how to integrate Silverlight

3 media with existing ASP.NET AJAX pages, and how to quickly create a Silverlight 3

application and a Silverlight 3 animation.

● Chapters 4 and 5 delve deeper into displaying shapes and graphics using Silverlight.

Chapter 4 also explains how animations are created in Silverlight and how to display

very large, high-resolution graphics using Deep Zoom technology. Chapter 5 explores

Expression Encoder and how to prepare media for display in Silverlight.

Introduction xix

● Chapter 6 focuses on the networking capabilities available in Silverlight. Silverlight

includes functionality for communicating with Web Services and WCF services using

protocols such as POX, sockets, SOAP, JSON, REST, RSS, and ATOM.

● Chapter 7 discusses options for securing Silverlight applications. Although Silverlight

is a subset of the .NET Framework, security options for Silverlight applications differ

from the full gamut of security options available to other types of .NET Framework

applications.

● Chapter 8 illustrates most of the controls available in Silverlight 3. Silverlight controls

are commonly divided into categories of layout controls and data entry or user

interface controls. Several third-party control vendors are actively creating control

suites for Silverlight, and developers are able to customize all the controls that ship

with Silverlight as well as create fully custom controls.

● Chapter 9 explores the options available in Silverlight for accessing and managing

data. Silverlight can easily read and write data as XML as well as store and retrieve

data in local Isolated Storage. The Silverlight framework includes functionality for

accessing data using Language Integrated Query (LINQ), and virtually all control

properties can be dynamically configured through data binding.

● Chapter 10 discusses how to improve performance in Silverlight applications by

downloading large resources, such as media, asynchronously using the WebClient

class. This chapter also explains the concepts of synchronous versus asynchronous

processing.

● Chapter 11 explores the debugging, testing, and deployment of Silverlight applications.

Common options for deploying Silverlight applications include to a locally hosted web

server and to the Windows Live Silverlight Streaming service.

● Chapter 12 applies Silverlight development techniques learned to create line of business

(LOB) rich internet applications (RIAs). This chapter illustrates many useful techniques

that make Silverlight a viable development option for the everyday, real-world, business

application developer.

I am constantly on the road training developers; as a result, my writing style and

approach to learning follow the developer training paradigm closely. While writing this

book, several interim versions and builds of Silverlight were released with each update,

including changes and enhancements that, in several cases, broke existing Silverlight code.

Hence, if you find yourself pulling your hair out trying to figure out why code in Silverlight

is not functioning correctly, please contact me for assistance at shannonhorn@msn.com.

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