microsoft press csharp programmer's cookbook

7/29/2019 Microsoft Press CSharp Programmer's Cookbook

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Table of Contents

1Table of Contents .................................................................................................................................................................................2BackCover..................................................................................................................................................................................................3C# Programmer's Cookbook .......................................................................................................................................................4Introduction ................................................................................................................................................................................................5Code Samples ......................................................................................................................................................................................6System Requirements ......................................................................................................................................................................7Other Books ..........................................................................................................................................................................................8Microsoft Press Support ..................................................................................................................................................................91.1 Create a Console Application ...........................................................................................................................................


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C# Programmer's Cookbook

by Allen Jones ISBN:0735619301

Microsoft Press 2004

This book offers 226 code recipes applicable to a variety of difficulties that may

arise in the process of application development. Topics covered include XMLprocessing, Windows forms, database access, networking, runtime security,

cryptography and more.

Table of Contents


Introduction

Chapter 1 - Application Development

Chapter 2 - Working with Data

Chapter 3 - Application Domains, Reflection, and Metadata

Chapter 4 - Threads, Processes, and Synchronization

Chapter 5 - XML Processing

Chapter 6 - Windows Forms

Chapter 7 - ASP.NET and Web Forms

Chapter 8 - Graphics, Multimedia, and Printing

Chapter 9 - Files, Directories, and I/O

Chapter 10 - Database Access

Chapter 11 - Networking and Internetworking

Chapter 12 - XML Web Services and Remoting

Chapter 13 - Runtime Security

Chapter 14 - Cryptography

Chapter 15 - Unmanaged Code Interoperability

Chapter 16 - Commonly Used Interfaces and Patterns

Chapter 17 - Windows Integration

Index

List of Figures

List of Tables

C# Programmer's Cookbook @Team LiB

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Back Cover

Next time you hit the wall with a tough C# development problem, get the code behind the

solutionand solve it the right way. The C# Programmers Cookbookprovides at-a-glance

reference to hundreds of C# and Microsoft .NET Framework programming scenarios using a

concise, problem/solution format. The books organized so you can quickly zero in on thetopics and answers you needwith practical examples, code snippets, best practices, and

undocumented secrets to get the job done.

No half-baked solutions. Get expert code from expert developers.

Get hundreds of recipes covering every application typefrom Microsoft Windows to

Web pages, Web services, Windows Forms, and Windows services.

Discover expert ways to solve common Web application and network programming

challenges.

Manage files, directories, and streams with the .NET I/O classes.

Access databases using Microsoft ADO.NET.

Tackle advanced techniques for multithreading, manipulating XML data, .NET

Remoting, and reusing common patterns.

Develop rich multimedia applications using the .NET Framework.

Help protect your applications with code access security, role-based security, and

cryptography.

Interoperate with legacy Win32 API and COM-based solutions.

About the Author

Allen Jones is coauthor of the popular C# for Java Developers, Microsoft .NET XML Web

Services Step by Step, and Programming .NET Security. A 13-year technology veteran, he

is known for the depth of his C# and .NET expertise. He specializes in developing and

implementing enterprise solutions, including e-commerce and security systems.


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Allen Jones

Microsoft

For Brenda

PUBLISHED BY Microsoft Press A Division of Microsoft Corporation One Microsoft Way Redmond,

Washington 98052-6399

Copyright 2004 by Allen Jones and Matthew MacDonald

All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form

or by any means without the written permission of the publisher.

Library of Congress Cataloging-in-Publication Data [pending.]

Printed and bound in the United States of America.

1 2 3 4 5 6 7 8 9 QWT 8 7 6 5 4 3

Distributed in Canada by H.B. Fenn and Company Ltd.

A CIP catalogue record for this book is available from the British Library.

Microsoft Press books are available through booksellers and distributors worldwide. For further

information about international editions, contact your local Microsoft Corporation office or contact

Microsoft Press International directly at fax (425) 936-7329. Visit our Web site at

www.microsoft.com/mspress. Send comments to [email protected].

Active Directory, ActiveMovie, ActiveX, Authenticode, DirectShow, DirectX, Microsoft, Microsoft Press,

MSDN, Visual Studio, Win32, Windows, the Windows logo, Windows Media, and Windows NT are

either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other

countries. Other product and company names mentioned herein may be the trademarks of their

respective owners.

The example companies, organizations, products, domain names, e-mail addresses, logos, people,

places, and events depicted herein are fictitious. No association with any real company, organization,

product, domain name, e-mail address, logo, person, place, or event is intended or should be inferred.

Acquisitions Editor: Danielle Bird Voeller

Project Editor: Dick Brown and Denise BankaitisTechnical Editor: Eric Dettinger

Body Part No. X10-08418

Allen Jones

Allen Jones is coauthor of the popularC# for Java Developers and Microsoft .NET XML Web

Services Step by Step (Microsoft Press).A 13-year technology veteran, he is known for the depth of

his C# and .NET expertise. Allen specializes in developing and implementing enterprise solutions,

including e- commerce and security systems.


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Introduction

Overview

Mastering the development of Microsoft .NET Framework applications in C# is less about knowing the

C# language and more about knowing how to use the functionality of the .NET Framework class

library most effectively. The C# Programmer's Cookbookexplores the breadth of the .NET Framework

class library and provides specific solutions to common and interesting programming problems. Each

solution (or recipe) is presented in a succinct problem/solution format and is accompanied by working

code samples.

The C# Programmer's Cookbookis not intended to teach you how to program, nor to teach you C#.

However, if you have even the most rudimentary experience programming applications built on the

.NET Framework using C#, you will find this book to be an invaluable resource.

Ideally, when you are facing a problem, this book will contain a recipe that provides the solutionor at

least it will point you in the right direction. Even if you are simply looking to broaden your knowledge ofthe .NET Framework class library, the C# Programmer's Cookbookis the perfect resource to assist

you. You cannot become proficient with C# and the classes in the .NET Framework class library

merely by reading about them; you must use them and experiment with them by writing programs,

programs, and more programs. The structure and content of this book and the real-world applicability

of the solutions it provides offer the perfect starting point from which to kick-start your own

experimentation.

Note The code in this book has been written for and tested on version 1.1 of the .NET Framework.

In many cases, you will find that the sample code will run on version 1.0 of the .NET

Framework, but this has not been tested and no guarantees are made.


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Code Samples

The code for all recipes in the C# Programmer's Cookbookis available online at

http://microsoft.com/mspress/books/6456.asp. To download the sample files, click the Companion

Content link in the More Information menu on the right side of the page. This action loads the

Companion Content page, which includes a link for downloading the sample files. To install the

sample files, click the Download The Book's Sample Files link and follow the instructions in the setup

program. A link to the sample code will be added to your Start menu.

The code is provided as a set of Visual Studio .NET 2003 solutions and projects organized by chapter

and recipe number. Each chapter is a separate solution, and each recipe is a separate project within

the chapter's solution. Some recipes in Chapter 11 and Chapter 12 that demonstrate network

programming include separate projects that contain the client and server elements of the recipe's

solution.

Although all samples are provided as Visual Studio .NET projects, most consist of a single source file

that you can compile and run independent of Visual Studio .NET. If you are not using Visual Studio

.NET 2003 you can locate the code for a particular recipe by navigating through the directory

structure of the sample code. For example, to find the code for recipe 4.3, you would look up the code

in the directory "Chapter04\Recipe04-03". If you use the command-line compiler, ensure that you

include references to all required .NET class library assemblies.

Some of the sample applications require command-line arguments. Where required, the recipe's text

will describe the arguments. If you are using Visual Studio .NET, you can enter these arguments in the

project properties (under the Debugging node of the Configuration Properties item). Keep in mind that

if you need to enter directory or file names that incorporate spaces, you will need to place the full

name in quotation marks.

Some additional steps are required to install the two virtual directories used for the examples thataccompany Chapter 7, "ASP.NET and Web Forms," and Chapter 12, "XML Web Services and

Remoting." These steps are described in a readme.txt file provided with the downloaded code and on

the code download page.


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System Requirements

To run the sample code accompanying this book, you will need the following software:

Microsoft .NET Framework SDK version 1.1

Microsoft Visual Studio .NET 2003 (recommended)

Microsoft Windows 2000, Windows XP, or Microsoft Windows Server 2003

Microsoft SQL Server 2000 or MSDE for the recipes in Chapter 10

Microsoft Internet Information Services (IIS) for some recipes in Chapter 7 and Chapter 12

The minimum hardware specification for development is a 450-MHz Pentium II-class processor, with a

minimum of 128 MB of RAM if you're running Microsoft Windows 2000 and 256 MB of RAM if you're

running Windows XP, Windows 2000 Server, or Windows Server 2003. You'll need about 5 GB of free

hard-disk space to install Visual Studio .NET 2003. These values are minimums, and your

development life will be much easier on a system with ample RAM and free disk space.

NoteAlthough Microsoft's implementation of the .NET Framework for Windows is the focus of the

C# Programmer's Cookbook, an important goal was to provide a useful resource to all C#

programmers regardless of the platform on which they are developing or the tools to which

they have access. Apart from specific topics that are not supported on all .NET platforms

(such as Windows Forms, ADO.NET, and ASP.NET) many of the samples in this book are

valid across all .NET implementations.


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Other Books

If you have no programming experience, this book will not teach you how to program. Similarly, if you

are a programmer but have little or no C# experience, this book does not provide the structure

required to teach you how to program effectively in C#. Depending on your programming background

and current level of C# knowledge, the following books can teach you enough about C# and the .NETFramework to enable you to get the most from the solutions provided in this book:

Programming in the Key of C#: A Primer for Aspiring Programmers (Microsoft Press, 2003)

Charles Petzold.

Microsoft Visual C# .NET Step by Step Version 2003 (Microsoft Press, 2002) John Sharp

and Jon Jagger.

Microsoft Visual C# .NET (Core Reference) (Microsoft Press, 2002) Mickey Williams.

If you want to explore topics discussed in this book in more detail, or you want to understand more

about the internal operation of the .NET Framework, I recommend the following books:

Inside C#, Second Edition (Microsoft Press, 2002) Tom Archer and Andrew Whitechapel.

Applied Microsoft .NET Framework Programming(Microsoft Press, 2002) Jeffrey Richter

(Wintellect).

Essential .NET, Volume 1: The Common Language Runtime (Addison-Wesley, 2002) Don

Box and Chris Sells.

Programming Microsoft Windows with C#(Microsoft Press, 2001) Charles Petzold.

Programming .NET Security(O'Reilly & Associates, 2003) Adam Freeman and Allen Jones.

Microsoft ADO.NET (Core Reference) (Microsoft Press, 2002) David Sceppa.

Advanced .NET Remoting(Apress, 2002) Ingo Rammer.


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Microsoft Press Support

Every effort has been made to ensure the accuracy of the book and its companion content. Microsoft

also provides corrections for books through the World Wide Web at the following address:

http://www.microsoft.com/mspress/support/

If you have comments, questions, or ideas regarding the presentation or use of this book or the

companion content, you can send them to Microsoft using either of the following methods:

Postal Mail:

Microsoft Press

ATTN: C# Programmer's CookbookEditor

One Microsoft Way

Redmond, WA 98052-6399

E-Mail: [email protected]

Please note that product support isn't offered through the above mail addresses. For support

information regarding Visual Studio .NET 2003, go to http://msdn.microsoft.com/vstudio/. You can

also call Standard Support at (425) 635-7011 weekdays between 6 A.M. and 6 P.M. Pacific time, or

you can search Microsoft Product Support Services at http://support.microsoft.com/support.


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1.1 Create a Console Application

Problem

You need to build an application that doesn't require a Windows graphical user interface (GUI) but

instead displays output to, or reads input from, the Windows command prompt (console).

Solution

Ensure you implement a staticmethod named Main with one of the following signatures in at least one

of your source code files.

public static void Main();

public static void Main(string[] args);

public static int Main();

public static int Main(string[] args);

Use the/target:exe switch on the C# compiler (csc.exe) when you compile your assembly.

Discussion

By default, the C# compiler will build a Console application unless you specify otherwise. For this

reason, it's not necessary to specify the/target:exe switch, but doing so makes your intention clearer,

which is useful if you are creating build scripts that will be used by others or will be used repeatedly

over a period of time. The following example lists a class named ConsoleUtils that is defined in a file

named ConsoleUtils.cs:

using System;

public class ConsoleUtils {

// A method to display a prompt and read a response from the console

public static string ReadString(string msg) {

Console.Write(msg);

return System.Console.ReadLine();

}

// A method to display a message to the console

public static void WriteString(string msg) {

System.Console.WriteLine(msg);

}

// Main method used for testing ConsoleUtility methods

public static void Main() {

// Prompt the reader to enter their name

string name = ReadString("Please enter your name : ");

// Welcome the reader to the C# Cookbook

WriteString("Welcome to the C# Programmer's Cookbook, " + name);

}

}

To build the ConsoleUtils class into a Console application named ConsoleUtils.exe, use the command

csc /target:exe ConsoleUtils.cs. You can run the resulting executable assembly directly from the

command line. When run, the Main method of the ConsoleUtils.exe application prompts you for your


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name and then welcomes you to the C# Programmer's Cookbook, as shown here.

Please enter your name : Rupert

Welcome to the C# Programmer's Cookbook, Rupert

In reality, applications rarely consist of a single source file. As an example, the HelloWorldclass listed

here uses the ConsoleUtils class to display the message "Hello, world" to the console. (HelloWorldis

contained in the HelloWorld.cs file.)

public class HelloWorld {

public static void Main() {

ConsoleUtils.WriteString("Hello, world");

}

}

To build a Console application consisting of more than one source code file, you must specify all the

source files as arguments to the compiler. For example, the following command builds an application

named MyFirstApp.exe from the HelloWorld.cs and ConsoleUtils.cs source files.

csc /target:exe /main:HelloWorld

/out:MyFirstApp.exe HelloWorld.cs ConsoleUtils.cs

The/outswitch allows you to specify the name of the compiled assembly. Otherwise, the assembly is

named after the first source file listedHelloWorld.cs in the example. Because both the HelloWorld

and ConsoleUtils classes contain Main methods, the compiler can't automatically determine which

method represents the correct entry point for the assembly. You must use the compiler's /main switch

to identify the name of the class that contains the correct entry point for your application.


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