C# 24小时自学指南：完整初学者套件

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"C# 24小时自学教材" 在编程领域，C#是一种广泛使用的面向对象的编程语言，尤其在开发Windows应用程序、游戏以及Web应用时。本书《24小时自学C#》针对初学者，提供了系统且快速的学习路径，旨在帮助读者在短时间内掌握C#的基础知识。首先，书中可能会介绍C#的基础语法，包括变量、数据类型、运算符、控制流（如条件语句和循环）等。这些是所有编程语言的基础，对于理解C#的运行机制至关重要。作者James Foxall可能通过清晰易懂的例子和练习，引导读者逐步熟悉这些概念。接着，会深入到类和对象，这是面向对象编程的核心。读者将学习如何定义和使用类，创建实例，以及了解封装、继承和多态等面向对象编程的特性。此外，可能会涉及接口和抽象类，这些都是组织和设计复杂代码结构的关键。 C#中的异常处理也是重要一环，书籍会解释如何使用try-catch语句来捕获和处理程序运行时可能出现的错误。这有助于编写健壮的代码，防止程序因未预期的输入或情况而崩溃。函数和方法是C#中的另一个重点，它们是代码复用和模块化设计的基础。书中可能会讲解函数的定义、参数传递和返回值，以及如何使用静态和实例方法。随着对C#基本概念的理解加深，读者会接触到更高级的主题，如委托、事件和Lambda表达式。这些特性在C#中常用于实现回调函数和异步编程，特别是在.NET框架下的Windows Forms或WPF应用开发中。此外，书籍还可能涵盖泛型，这是一种强大的工具，允许创建可以适用于多种数据类型的类和方法，提高代码的灵活性和重用性。 LINQ（Language Integrated Query，语言集成查询）是C#的一个特色，它使得数据查询变得更加简洁和直观。读者将学习如何使用LINQ查询数据库、集合和其他数据源，以及如何使用LINQ to Objects、LINQ to XML和LINQ to SQL。最后，为了全面了解C#，书籍还会涉及到.NET Framework，这是C#运行的基础平台，包括基础类库和CLR（Common Language Runtime）。这有助于理解C#代码如何与运行时环境交互，以及如何利用.NET提供的各种服务。《24小时自学C#》是一本全面的入门教程，涵盖了从基本语法到高级特性的广泛内容，旨在帮助读者在24小时内建立起坚实的C#编程基础。通过实际操作和练习，读者可以在短时间内快速上手，为后续的C#开发工作打下坚实的基础。

We Want to Hear from You!

As the reader of this book, you are our most important critic and commentator. We value

your opinion, and we want to know what we’re doing right, what we could do better, what

areas you’d like to see us publish in, and any other words of wisdom you’re willing to pass

our way.

You can email or write me directly to let me know what you did or didn’t like about this

book—as well as what we can do to make our books stronger.

Please note that I cannot help you with technical problems related to the topic of this book, and

that because of the high volume of mail I receive, I might not be able to reply to every message.

When you write, please be sure to include this book’s title and author as well as your name

and phone number or email address. I will carefully review your comments and share them

with the author and editors who worked on the book.

Email: feedback@samspublishing.com

Mail: Neil Rowe

Executive Editor

Sams Publishing

800 East 96th Street

Indianapolis, IN 46240 USA

Reader Services

Visit our website and register this book at www.informit.com/title/9780672329906 for conve-

nient access to any updates, downloads, or errata that might be available for this book.

Introduction

With Microsoft’s introduction of the .NET platform, a new, exciting programming language

was born. Visual C# is now the language of choice for developing on the .NET platform,

and Microsoft has even written a majority of the .NET Framework using Visual C#. Visual

C# is a modern object-oriented language designed and developed from the ground up with

a best-of-breed mentality, implementing and expanding on the best features and functions

found in other languages. Visual C# 2008 combines the power and flexibility of C++ with

some of the simplicity of Visual C#.

Audience and Organization

This book is targeted toward those who have little or no programming experience or who

might be picking up Visual C# as a second language. The book has been structured and

written with a purpose: to get you productive as quickly as possible. I’ve used my experi-

ences in writing applications with Visual C# and teaching Visual C# to create a book that I

hope cuts through the fluff and teaches you what you need to know. All too often, authors

fall into the trap of focusing on the technology rather than on the practical application of

the technology. I’ve worked hard to keep this book focused on teaching you practical skills

that you can apply immediately toward a development project. Feel free to post your sug-

gestions or success stories at www.jamesfoxall.com/forums.

This book is divided into five parts, each of which focuses on a different aspect of develop-

ing applications with Visual C# 2008. These parts generally follow the flow of tasks you’ll

perform as you begin creating your own programs with Visual C# 2008. I recommend that

you read them in the order in which they appear.

Part I, “The Visual C# 2008 Environment,” teaches you about the Visual C# environ-

ment, including how to navigate and access Visual C#’s numerous tools. In addition,

you’ll learn about some key development concepts such as objects, collections, and

events.

Part II, “Building a User Interface,” shows you how to build attractive and functional

user interfaces. In this part, you’ll learn about forms and controls—the user interface

elements such as text boxes and list boxes.

Part III, “Making Things Happen: Programming,” teaches you the nuts and bolts of

Visual C# 2008 programming—and there’s a lot to learn. You’ll discover how to create

classes and procedures, as well as how to store data, perform loops, and make

decisions in code. After you’ve learned the core programming skills, you’ll move into

object-oriented programming and debugging applications.

Part IV, “Working with Data,” introduces you to working with graphics, text files, and

programming databases, and shows you how to automate external applications such

as Word and Excel. In addition, this part teaches you how to manipulate a user’s file

system and the Windows Registry.

Part V, “Deploying Solutions and Beyond,” shows you how to distribute an applica-

tion that you’ve created to an end user’s computer. In Hour 24, “The 10,000-Foot

View,” you’ll learn about Microsoft’s .NET initiative from a higher, less-technical level.

Many readers of previous editions have taken the time to give me input on how to make

this book better. Overwhelmingly, I was asked to have examples that build on the examples

in the previous chapters. In this book, I have done that as much as possible. Now, instead

of learning concepts in isolated bits, you’ll be building a feature-rich Picture Viewer pro-

gram throughout the course of this book. You’ll begin by building the basic application. As

you progress through the chapters, you’ll add menus and toolbars to the program, build an

Options dialog box, modify the program to use the Windows Registry and a text file, and

even build a setup program to distribute the application to other users. I hope you find this

approach beneficial in that it enables you to learn the material in the context of building a

real program.

Conventions Used in This Book

This book uses several design elements and conventions to help you prioritize and reference

the information it contains:

Sams Teach Yourself Visual C# 2008 in 24 Hours

By the Way boxes provide useful sidebar information that you can read immedi-

ately or circle back to without losing the flow of the topic at hand.

Did You Know? boxes highlight information that can make your Visual C# pro-

gramming more effective.

Watch Out! boxes focus your attention on problems or side effects that can

occur in specific situations.

By the

Way

Did you

Know?

Watch

Out!

New terms appear italic for emphasis.

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