Microsoft Visual C♯.Net step by step

663 Pages·2002·9.133 MB·English

by  John Sharp, Jon Jagger

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title: Microsoft Visual C# .Net Step By StepStep By Step
(Redmond, Wash.)
author: Sharp, John.
publisher:
isbn10 | asin: 0735612897
print isbn13: 9780735612891
ebook isbn13: 9780585487199
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Page i
Step by Step
Microsoft®
MICROSOFT® VISUAL C# NET
STEP BY STEP
John Sharp
Jon Jagger
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PUBLISHED BY
Microsoft Press
A Division of Microsoft Corporation
One Microsoft Way
Redmond, Washington 98052-6399
Copyright © 2002 by Microsoft Corporation
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 Jagger, Jon, 1966-
Microsoft Visual C# .NET Step by Step / Jon Jagger, John Sharp.
p. cm.
Includes index.
ISBN 0-7356-1289-7
1. C# (Computer program language) 2. Microsoft Visual C#. I. Sharp, John, 1964-
II. Title.
QA76.73.C153 J32 2002
005.13'3--dc21 2001058662
Printed and bound in the United States of America.
1 2 3 4 5 6 7 8 9 QWT 7 6 5 4 3 2
Distributed in Canada by Penguin Books Canada Limited.
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 [phone]. Visit our Web site at
www.microsoft.com/mspress. Send comments to [email protected].
ActiveX, IntelliSense, JScript, Microsoft, Microsoft Press, Visual Basic, Visual C++, Visual C#, Visual
Studio, Windows, 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
Project Editor: Karen Szall
Body Part No. X08-04481
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Contents

Acknowledgments ix
Introduction xi
Minimum System Requirements xi
Finding Your Best Starting Point in This Book xii
Corrections, Comments, and Help xiv
Visit the Microsoft Press Web Site xiv
Installing and Using the Practice Files xv
Conventions and Features in This Book xxi

PART 1 Introducing Microsoft Visual C# and Visual Studio.Net 1
Chapter 1 Welcome to C# 3
Beginning Programming with the Visual Studio .NET Environment 3
Writing Your First Program 6
Using Namespaces 11
Creating Documentation Using XML and Comments 14
Creating a Windows Forms Application 19
Chapter 1 Quick Reference 28
Chapter 2 Working with Variables, Operators, and Expressions 29
Understanding Statements 29
Using Identifiers 30
Identifying Keywords 30
Using Variables 31
Working with Primitive Data Types 33
Setting Arithmetic Operators 38
Chapter 2 Quick Reference 43
Chapter 3 Writing Methods and Applying Scope 45
Declaring Methods 45
Calling Methods 49
Understanding Scope 51
Writing and Calling Methods 54
Chapter 3 Quick Reference 62
Chapter 4 Using Decision Statements 63
Declaring bool Variables 63
Using Boolean Operators 64
Executing if Statements 67
Chapter 4 Quick Reference 78
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Chapter 5 Using Iteration Statements 79
Using Compound Assignment Operators 79
Incrementing and Decrementing Variables 81
Writing while Statements 81
Writing for Statements 83
Writing do Statements 85
Chapter 5 Quick Reference 98
Chapter 6 Managing Errors and Exceptions 99
Coping with Errors 100
Trying Code and Catching Exceptions 101
Using Multiple catch Handlers 102
Writing a General catch Handler 103
Using Checked and Unchecked Integer Arithmetic 107
Throwing Exceptions 112
Writing a finally block 118
Chapter 6 Quick Reference 121
PART 2 Understanding the C# Language 123
Chapter 7 Creating and Managing Classes and Objects 125
What Is Classification? 125
What Is Encapsulation? 126
Controlling Accessibility 127
Working with Constructors and the new Keyword 129
Understanding static Methods and Data 139
Chapter 7 Quick Reference 144
Chapter 8 Understanding Values and References 147
Copying int Variables and Classes 147
Using ref and out Parameters 152
What Are the Stack and the Heap? 155
What Is System.Object? 157
Boxing 159
Unboxing 160
Chapter 8 Quick Reference 163
Chapter 9 Creating Value Types with Enumerations and Structs 165
Working with Enumerations 165
Working with struct Types 170
Chapter 9 Quick Reference 182
Chapter 10 Using Arrays and Collections 183
What is an Array? 183
What Are Collection Classes? 192
Chapter 10 Quick Reference 204
Chapter 11 Understanding Parameter Arrays 205
Creating Overloaded Methods 205
Using Array Arguments 206
Chapter 11 Quick Reference 218
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Chapter 12 Working with Inheritance 219
What Is Inheritance? 219
Understanding Core Syntax 220
Creating Interfaces 226
Working with Multiple Interfaces 239
Summarizing Keyword Combinations 242
Chapter 12 Quick Reference 243
Chapter 13 Using Garbage Collection and Resource Management 245
Garbage Collection 245
Resource Management 250
Chapter 13 Quick Reference 259
PART 3 Creating Components 261
Chapter 14 Implementing Properties to Access Attributes 263
Comparing Fields and Methods 263
What Are Properties? 265
Understanding the Property Restrictions 268
Using Static Properties 269
Declaring Interface Properties 271
Chapter 14 Quick Reference 277
Chapter 15 Using Indexers 279
What Is an Indexer? 279
Interface Indexers 286
Using Indexers in a Windows Application 287
Chapter 15 Quick Reference 291
Chapter 16 Delegates and Events 293
Using Delegate Declarations and Instances 293
Enabling Notifications with Events 302
Chapter 16 Quick Reference 309
Chapter 17 Operator Overloading 311
Working with Operators 311
Declaring Conversion Operators 321
Chapter 17 Quick Reference 326
PART 4 Working with Windows Applications 327
Chapter 18 Introducing Windows Forms 329
Creating Your Application 330
Adding Controls to the Form 338
Publishing Events in Windows Forms 345
Chapter 18 Quick Reference 350
Chapter 19 Working with Menus 351
Menu Guidelines and Style 351
Adding Menus and Processing Menu Events 352
Pop-Up Menus 360
Chapter 19 Quick Reference 364
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Chapter 20 Performing Validation 365
Validating Data 365
An Example—Customer Maintenance 366
Chapter 20 Quick Reference 377
Chapter 21 Using Complex Controls 379
The Explorer Interface 379
Splitter Windows, Docking Controls, and Panels 381
Controls for Navigating Data 385
Chapter 21 Quick Reference 403
Chapter 22 Using the MDI, Windows, and Dialog Boxes 405
What Is the Multiple Document Interface? 406
Creating Dialog Boxes 412
Using Common Dialog Controls 416
Chapter 22 Quick Reference 419
Chapter 23 Creating GUI Components 421
Working with User Controls 421
Specializing Controls Using Subclassing 431
Chapter 23 Quick Reference 438
PART 5 Managing Data 439
Chapter 24 Using a Database 441
Using ADO.NET Databases 441
Using the Northwind Traders Database 442
Chapter 24 Quick Reference 459
Chapter 25 Working with Data Binding and DataSets 461
Windows Forms Controls and Data Binding 462
Disconnected DataSets 469
Chapter 25 Quick Reference 478
Chapter 26 Handling XML 479
Why XML? 479
The Employee Timesheet System 483
Chapter 26 Quick Reference 497
PART 6 Building Web Applications 499
Chapter 27 Introducing ASP.NET 501
Understanding the Internet as an Infrastructure 502
Creating Web Applications with ASP.NET 505
Chapter 27 Quick Reference 522
Chapter 28 Understanding Validation Controls 523
Comparing Server and Client Validations 523
Chapter 28 Quick Reference 531
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Chapter 29 Accessing Data with Web Forms 533
Using the Web Forms DataGrid Control 533
Managing Security 534
Querying Data 539
Editing Data 547
Chapter 29 Quick Reference 553
Chapter 30 Building ASP.NET Applications 555
Additional Features of the DataGrid Control 555
Navigating Between Forms 564
Chapter 30 Quick Reference 571
Chapter 31 Building an XML Web Service 573
What is an XML Web Service? 573
Building the ProductService Web Service 578
Chapter 31 Quick Reference 590
Chapter 32 Consuming a Web Service 591
Web Services, Clients, and Proxies 591
Chapter 32 Quick Reference 602

About the Authors 603
Index 605
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Acknowledgments
This is the first book I have written, but hopefully not the last. In undertaking this project, I never
realized how much hard work it would be or how many people would be involved. I am now
enlightened! There are far too many to thank individually, but I would like to mention Karen Szall and
Danielle Bird at Microsoft Press, and Joe Perez, Stephanie Edmundson, Elisabeth Knottingham, and
Lonnon Foster, and thank them for their enduring patience with my endless typos, grammatical errors,
and jargon. I would also like to thank Suzanne Carlino, my project manager at Content Master, who
beat me up and made sure I stuck to the schedule, and Robert Burbidge, who stepped in at the last
minute and spent many thankless hours reviewing my work – and we are still friends!
Finally, I would like to acknowledge the support and help given to me by my family – to Diana, who had
to put up with me creeping to bed at 2:00 in the morning on many occasions (at least some occurrences
of which were related to my book-writing activities), to James, who kept asking ‘‘Is Daddy STILL on that
computer?,” and to Francesca, who just wants to see her name in a book.
And finally, finally, “Up the Gills!”.
John Sharp
I’d like to dedicate this book to the five most important people in my life: my mother for having such a
strong but gentle influence on me; my wife, Natalie, for making my life infinitely richer; and our three
children, Ellie, Penny, and Patrick, who teach me important new things every day.
I’d also like to thank everyone who has helped me learn interesting things, particularly Douglas Adams,
Christopher Alexander, Sean Corfield, Richard Gabriel, Kevlin Henney, John Holt, and David Pye.
Finally, I’d like to pay tribute to the elegance of the two-seater sports cars made by Marlin Engineering,
the hilarity of the films made by Monty Python, the grass roots programming support provided by ACCU
(http://www.accu.org), and the quality of life generated by the people of the village I live in.
Jon Jagger
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