银光4入门指南：Expression.Blend4实战篇

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《Expression.Blend4.part1》是一本专为那些对Silverlight4或Microsoft Expression Blend 4不熟悉的读者设计的指南。这本书由Victor Gaudioso撰写，版权所有，未经版权所有者和出版社事先书面许可，不得以任何形式复制或传播。该书的ISBN分别是纸质版（978-1-4302-2973-5）和电子版（978-1-4302-2974-2），印制于美国。本书的核心内容聚焦于"FoundationExpression Blend4 with Silverlight"，这意味着它将深入探讨如何在Silverlight 4的开发环境中运用Expression Blend 4这款强大的工具。作者旨在通过这本书，为读者提供基础至进阶的学习路径，使他们能够掌握如何利用Blend 4创建交互式用户界面、设计美观的UI元素、以及实现高效的设计与开发流程。 "Foundation"章节可能涵盖了Blend 4的基础概念，包括软件界面介绍、工作区布局、基本工具和技术的熟悉等，确保读者对这款工具有一个扎实的了解。随后的章节可能会介绍如何利用Blend 4来设计和构建Silverlight应用程序，例如使用XAML语言描述界面布局，以及如何结合C#或VB.NET编写后端逻辑。此外，书中可能会涉及到使用Blend 4中的动画和过渡效果，以及如何集成WPF（Windows Presentation Foundation）元素，因为作者建议读者在阅读这本书之前先通读《WPF4 Unleashed》。这表明本书可能会包含对Silverlight与WPF之间差异和互补性的讨论，以及如何利用Blend 4在两种技术之间无缝切换。版权页的法律声明强调了尊重知识产权的重要性，包括对商标、服务标记和图像的使用规则。作者在使用这些标识时遵循了非商业性编辑性引用的原则，旨在促进知识传播而不侵犯权利。《Expression.Blend4.part1》是一本实用的教程，适合希望提升Silverlight 4和Expression Blend 4技能的开发者，无论是初学者还是希望深化理解的专业人士，都能从中获得宝贵的教学资源和实践经验。

INTRODUCTION

xvi

Introduction

Welcome to Foundation Expression Blend 4 with Silverlight! I am very excited about this, my third book, as

I have been able to take all the lessons learned from my first two books and make a book that I think really

can take the reader from a beginner in Silverlight to someone who is ready to enter the job market as a

junior Silverlight developer. After you have completed this book, you will have ten or so Silverlight projects

that you can add to your professional portfolio and build upon in your own work. Further, you will have an

all-around understanding of how Silverlight works, from the improved designer/developer workflow, to

content controls, to custom UserControls, to Behaviors, and even the all-powerful MediaElement.

Follow along as I take you from setting up the Silverlight development environment to creating your own

Rich Internet Applications (RIAs) complete with video, Animations, and dazzling graphics. And if at any

time you get stuck or lost, I invite you to shoot me an e-mail at my personal address:

wpfauthor@gmail.com. Teaching Silverlight is not something I do for money, it is my passion; if you have

the same passion to learn it as I have to teach it, I promise you that I will do all I can to facilitate your

becoming a knowledgeable Silverlight developer. So roll up your sleeves, and let’s dive into Blend 4 and

Silverlight!

Who this Book Is For

Throughout my career, I have purchased many technological publications just to realize that I was not part

of the target audience for that particular book. In order to help potential readers avoid this situation, I will

outline exactly who this book is for. This book is for you if you know the basics of Object-Oriented

Programming (OOP) and have some programming experience in languages such as JavaScript,

ActionScript, C++, Visual Basic, Java, or C, but have not used Silverlight. If you understand even just a

little about OOP, you can benefit from this book and start to develop in Silverlight; however, if you do not

have any experience in any of these languages, I suggest you buy a beginner’s guide on C# first.

Beginning C# 2008: From Novice to Professional, Second Edition, by Christian Gross (Apress, 2008), is a

good book and will give you far more information than you will need to make good use of the title in your

hands. An extra added skill would be experience with XML (Extensible Markup Language), as it is what a

large part of Silverlight is based upon, including XAML (Extensible Application Markup Language).

However, this isn’t essential, as in this book I assume you know as little as possible, and I start off with the

basics before leading you through more advanced tutorials.

What this Book Will Teach You

The following is a list of exactly what this book will teach you so that you know what you will be able to

accomplish in Silverlight and Blend once you have completed the book. You will

• Understand the typical Silverlight/Blend/Visual Studio workflow for creating Silverlight

applications

• Understand the Blend 4 IDE—what tools are available and how to use them properly

• Understand XAML and C# basics, as well as some advanced C# constructs such as a

CLRInstance of a DataFactory and a very popular user interface design pattern called

Model-View-ViewModel (MVVM)

• Know the basic Silverlight content element controls

INTRODUCTION

xvii

•

Understand the very powerful Silverlight MediaElement and how to use it to create video and

audio for your applications

• Learn how to create reusable styles and control templates

• Learn how to raise events and EventHandlers

• Learn about Behaviors: how to use them and create them

• Learn how to create an interactive prototype of a web application called a SketchFlow

• Understand the difference between Timelines and Storyboards, and learn how to use

Timelines to create complex Storyboard Animations

• Learn about the new features of Silverlight 4, including the Webcam and COM APIs

What Are Silverlight/Blend 4, C#, and XAML?

Silverlight has a large number of framework elements and controls, including Button, Grid, and

MediaElement. These are all written in XAML, which is an XML-based markup language. XAML also

enables you to create Storyboard Animations. The user interface controls can be controlled partially in

XAML using Storyboards, but for the most part they are controlled with C#. This type of structure is very

similar to the relationship between HTML and JavaScript, as HTML displays the content, whereas

JavaScript adds functionality and interactivity, such as mouse-over effects. Conversely, user interface

controls can be created in C#, but are most often created in XAML. XAML can also display assets such as

images, audio, and video. C# is a very robust Object-Oriented Programming language developed by

Microsoft, and is part of the .NET 4.0 Framework. I like to think of XAML as the pretty exterior of a cool car,

and C# as the powerful engine under the hood. So, the typical way that Silverlight creates and displays

content goes like this:

1. XAML describes how the controls, images, video, and other assets are shown.

2. C# gives these assets their functionality.

3. The compiler then puts the XAML user interface and functionality together into an executable

(EXE) file for a Silverlight desktop or web application.

4. The browser or desktop then displays the application.

The real power of Silverlight is the robustness of C# and the capability of using XAML to create the

interface.

Using Visual Studio and Blend

C# is usually created and edited in Visual Studio 2010, and XAML can be edited in both Blend and Visual

Studio 2010. Since Blend 3, though, you have the ability to create and edit C# in Blend as well as Visual

Studio 2010, and this ability has been enhanced in Blend 4. However, you may still want to edit or create

your C# code in Visual Studio, because Visual Studio has tools to assist in writing code, such as

Intellisense (discussed later in the book).

Blend, on the other hand, is a new instrument that allows you to create and display Silverlight assets such

as controls and images in code or visually. The Selection, Brush Transform, and various shape tools are

just a few of the features that Blend offers the developer. I go into these and other tools in Chapter 2, and

you will master these development tools in later chapters.

INTRODUCTION

xviii

What Silverlight Is and How It Differs from WPF

Silverlight, formerly known as Windows Presentation Foundation Everywhere (WPF/E), is a cross-platform

version of WPF. Basically, it is a subset of WPF that can run on a Mac or a PC. WPF can only run on

Windows 7, Windows Vista, or Windows XP with .NET 3.0 or later installed (Windows XP ships with .NET

2.0). There are other differences, but most important is that WPF can make use of 3D objects, whereas

Silverlight can do some faking of 3D, but it’s not true 3D. This is because WPF can make use of the host

machine’s graphics card, and Silverlight cannot, as it is difficult to port 3D hardware acceleration across

different platforms. The final difference is that Silverlight integrates right into an HTML page by using the

Silverlight browser plug-in, whereas WPF needs to be inserted into an iframe to mix with HTML content. It

is worth noting that now Silverlight can also run Out Of Browser (OOB).

Online Resources

Throughout this book, I point you to online Silverlight examples I have created, as well as code snippets

and video tutorials. Currently I have some 50 or so Silverlight video tutorials that can all be found on the

following blog post: www.windowspresentationfoundation.com/?p=587. At the end of each chapter I

often point you to a specific video tutorial that will help broaden your understanding of the subject matter

we just went over.

Layout conventions

To keep this book as clear and easy to follow as possible, the following text conventions are used

throughout:

• Important words or concepts are normally highlighted on the first appearance in italics.

• Code is presented in fixed-width font, as are the names of most objects, controls,

properties, and classes.

New or changed code is presented in bold fixed-width font.

• Menu commands are written in the form Menu  Submenu  Submenu.

• Where I want to draw your attention to something, I’ve highlighted it like this:

Ahem, don’t say I didn’t warn you.

CHAPTER 1

Studio 2010 download page. For the purposes of this book I suggest you download and install the trial

version of Visual Studio 2010 Professional. I recommend that you use the Web Installer rather than

downloading the full 2GB ISO file. If you find that you want to continue developing Silverlight applications,

then I suggest you purchase Visual Studio 2010. However, if you would like to install and use the free

version, called Microsoft Visual Web Developer 2010 Express (available from

http://www.microsoft.com/express/web) you may, as it will be sufficient for this book. Just know that

it is a free, less robust version of Visual Studio 2010, but it will still enable you to develop Silverlight 4

applications. If you decide to start off with Visual Web Developer, you can always go back and purchase

Visual Studio 2010 at a later time.

After you decide which version is right for you, click the appropriate link and follow the instructions to install

either Visual Studio 2010 or Visual Web Developer Express 2010. Once you have done that you can move

along to the next section.

Installing the Silverlight 4 Tools for Visual Studio 2010

Locate the URL on the Silverlight.net Get Started page for the Silverlight 4 Tools for Visual Studio 2010 —

it should be at the end of the block of text containing the first Visual Studio 2010 link that you clicked. This

will install the developer runtime for Silverlight 4, the Visual Studio 2010 Project Templates that allow you

to create Silverlight 4 applications in Visual Studio 2010, and the Silverlight 4 Software Development Kit

(SDK). This is the very minimum you need to be able to develop Silverlight applications. However, we are

still missing one piece of software that I consider essential to Silverlight development, and that is Blend!

Go on to the next section and install Expression Blend.

Oftentimes the links for these products will move around the page. I tend to press Ctrl+F in Internet

Explorer and search for the product by name.

Installing Expression Blend 4

Scroll down the Get Started page, and under the heading Expand Your Silverlight Toolset, click the link

that says Microsoft Expression Blend 4. This will download and install the latest version of Blend for

developing Silverlight applications.

Now that you have Visual Studio 2010 or Visual Web Developer Express 2010, the Silverlight 4 Tools for

Visual Studio 2010, and Expression Blend 4, you are ready to go ahead and start developing Silverlight

applications. Now you can move ahead and create your very first Silverlight application to make sure you

got everything installed properly.

Creating Your Very First Silverlight Application

Now that you have all the required tools installed, you can create your very first Silverlight application. To

do that, follow the steps below:

Download from Wow! eBook <www.wowebook.com>

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