BEGINNING OBJECT-ORIENTED PROGRAMMING WITH C#

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3 BEGINNING OBJECT-ORIENTED PROGRAMMING WITH C# INTRODUCTION xxv PART I GETTING STARTED CHAPTER 1 Introducing C# CHAPTER 2 Understanding Objects PART II UNDERSTANDING C# SYNTAX CHAPTER 3 Understanding Data Types CHAPTER 4 Understanding C# Statements CHAPTER 5 Understanding Reference Data Types CHAPTER 6 Making Decisions in Code CHAPTER 7 Statement Repetition Using Loops CHAPTER 8 Understanding Arrays and Collections PART III WRITING YOUR OWN CLASSES CHAPTER 9 Designing Classes CHAPTER 10 Designing and Writing Custom Classes CHAPTER 11 Exception Handling and Debugging CHAPTER 12 Generics PART IV STORING DATA CHAPTER 13 Using Disk Data Files CHAPTER 14 Using Databases CHAPTER 15 Using LINQ Continues

4 PART V ADVANCED TOPICS CHAPTER 16 Inheritance and Polymorphism CHAPTER 17 Printing and Threading CHAPTER 18 Web Programming APPENDIX Answers to Exercises INDEX

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7 BEGINNING Object-Oriented Programming with C# Jack Purdum

8 Beginning Object-Oriented Programming with C# Published by John Wiley & Sons, Inc Crosspoint Boulevard Indianapolis, IN Copyright 2013 by John Wiley & Sons, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN: ISBN: (ebk) ISBN: (ebk) ISBN: (ebk) Manufactured in the United States of America No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) , fax (978) Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) , fax (201) , or online at Limit of Liability/Disclaimer of Warranty: The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Web site is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Web site may provide or recommendations it may make. Further, readers should be aware that Internet Web sites listed in this work may have changed or disappeared between when this work was written and when it is read. For general information on our other products and services please contact our Customer Care Department within the United States at (877) , outside the United States at (317) or fax (317) Wiley publishes in a variety of print and electronic formats and by print-on-demand. Some material included with standard print versions of this book may not be included in e-books or in print-on-demand. If this book refers to media such as a CD or DVD that is not included in the version you purchased, you may download this material at For more information about Wiley products, visit Library of Congress Control Number: Trademarks: Wiley, the Wiley logo, Wrox, the Wrox logo, Programmer to Programmer, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates, in the United States and other countries, and may not be used without written permission. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc., is not associated with any product or vendor mentioned in this book.

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11 ABOUT THE AUTHOR DR. JACK PURDUM started his programming career on an IBM 360 mainframe as a graduate student in the 1960s. In the mid-1970s, he became interested in software development for microcomputers, and he founded his own software development company (Ecosoft, Inc.) in The company s main product was a statistics package (Microstat) that he wanted to rewrite in a new language called C. Lacking a suitable C compiler, Dr. Purdum s company developed its own MS-DOS-based C compiler and other programming tools. He has been involved with language instruction ever since. Dr. Purdum has authored 17 texts and numerous programming articles and has received several teaching awards. He retired from Purdue University s College of Technology and is currently involved with on-site training and embedded systems programming.

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13 CREDITS Executive Editor Robert Elliott Project Editor Tom Dinse Technical Editor Rod Stephens Production Editor Rebecca Anderson Copy Editor Apostrophe Editing Services Editorial Manager Mary Beth Wakefi eld Freelancer Editorial Manager Rosemarie Graham Associate Director of Marketing David Mayhew Marketing Manager Ashley Zurcher Business Manager Amy Knies Production Manager Tim Tate Vice President and Executive Group Publisher Richard Swadley Vice President and Executive Publisher Neil Edde Associate Publisher Jim Minatel Project Coordinator, Cover Katie Crocker Proofreader Sarah Kaikini, Word One Indexer Johnna VanHoose Cover Designer LeAndra Young Cover Image Vladislav Lebedinski / istockphoto

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15 ACKNOWLEDGMENTS NO BOOK IS WRITTEN without massive effort by others. Tom Dinse and the editorial staff at Wrox have all made this a better book. A large group of people also contributed to this book in a variety of different ways, providing everything from encouragement to ideas for examples. First, thanks to my students who served as guinea pigs for virtually everything used in this text. Others who contributed include Jerry and Barb Forro, Bill Gromer, Joe Kack, Katie Mohr, John Purdum, and John Strack. A special vote of appreciation to Jane Holcer for her unwavering support and encouragement throughout the process of writing this book.