Starting Out With Visual Basic 2008 Update

889 Pages·2009·18.878 MB·English

by  Gaddis, Tony;Irvine, Kip

STARTING OUT WITH
Visual Basic® 2008
UPDATE
Fourth Edition
Tony Gaddis
Haywood Community College
Kip Irvine
Florida International University
Addison-Wesley
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Library of Congress Cataloging-in-Publication Data
Gaddis, Tony.
Starting out with Visual Basic 2008 / Tony Gaddis, Kip Irvine. -- Updated 4th ed.
p. cm.
ISBN 978-0-13-607695-7
1. Microsoft Visual BASIC. 2. BASIC (Computer program language) I. Irvine, Kip
R., 1951- II. Title.
QA76.73.B3G327 2010
005.2'762--dc22 2008055546
Copyright © 2010 Pearson Education, Inc. All rights reserved. No part of this publica-
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ISBN 13: 9780136076957
ISBN 10: 0136076955
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Locations of VideoNotes
Chapter 1 Forms, Controls, and Properties . . . . . . . . . . . . . . . . . . . . . . . . . 8
Event-Driven Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Solving the Sales Tax Problem . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 2 Starting a Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Using Label Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Responding to Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
The Name Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
The Name and Address Problem . . . . . . . . . . . . . . . . . . . . . . . 96
Chapter 3 Introduction to Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Problem Solving with Variables . . . . . . . . . . . . . . . . . . . . . . . 123
The Miles per Gallon Calculator Problem . . . . . . . . . . . . . . . . 185
Chapter 4 The If...Then Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
The If...Then...Else Statement . . . . . . . . . . . . . . . . . . . . 201
The Roman Numeral Converter Problem . . . . . . . . . . . . . . . . 267
Chapter 5 The Do While Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
The For Next Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
The Sum of Numbers Problem . . . . . . . . . . . . . . . . . . . . . . . . 347
Chapter 6 Passing Arguments to Procedures . . . . . . . . . . . . . . . . . . . . . . 367
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
The Retail Price Calculator Problem . . . . . . . . . . . . . . . . . . . . 404
Chapter 7 Creating and Displaying a Second Form . . . . . . . . . . . . . . . . 413
Creating a Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
The Astronomy Helper Problem . . . . . . . . . . . . . . . . . . . . . . . 486
Chapter 8 Accessing Array Elements with a Loop . . . . . . . . . . . . . . . . . . 493
Calculating the Sum of an Array's Elements . . . . . . . . . . . . . . 495
The Lottery Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 557
Chapter 9 Writing Data to a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 563
Reading Data from a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . 569
The Random Number File Generator Problem . . . . . . . . . . . . 622
Chapter 10 The DataGridView Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 630
Data-Bound Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 641
The Karate Members Grid Problem . . . . . . . . . . . . . . . . . . . . 690
Chapter 11 Creating a Simple Web Application . . . . . . . . . . . . . . . . . . . . 700
The Stadium Seating Problem . . . . . . . . . . . . . . . . . . . . . . . . 746
Chapter 12 Creating a Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 753
Collections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 770
The Scrollable Tax Calculator Problem . . . . . . . . . . . . . . . . . . 813
iii
Contents in Brief
Preface xii
Chapter 1 Introduction to Programming
and Visual Basic 1
Chapter 2 Creating Applications with Visual Basic 41
Chapter 3 Variables and Calculations 99
Chapter 4 Making Decisions and Working with Strings 193
Chapter 5 Lists, Loops, Validation, and More 275
Chapter 6 Procedures and Functions 355
Chapter 7 Multiple Forms, Standard Modules, and Menus 411
Chapter 8 Arrays, Timers, and More 489
Chapter 9 Files, Printing, and Structures 561
Chapter 10 Working with Databases 625
Chapter 11 Developing Web Applications 695
Chapter 12 Classes, Collections, and Scrollable Controls 749
Appendix A User Interface Design Guidelines 817
Appendix B Converting Mathematical Expressions
to Programming Statements 820
Appendix C Answers to Checkpoints 822
Appendix D Glossary 840
Appendix E Visual Basic 2008 Function and Method Reference
(located on the Student CD-ROM)
Appendix F Binary and Random-Access Files
(located on the Student CD-ROM)
Appendix G Answers to Odd-Numbered Review Questions
(located on the Companion Website at
http://www.aw.com/gaddisvb)
Index 851
iv
Contents
Preface xii
Chapter 1 Introduction to Programming
and Visual Basic 1
1.1 Computer Systems: Hardware and Software . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Programs and Programming Languages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TUTORIAL 1-1: Running the Wage Calculator application . . . . . . . . . . . . . . . . . . . . . 8
TUTORIAL 1-2: Running an application that demonstrates event procedures . . . . . . . 9
1.3 More about Controls and Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TUTORIAL 1-3: Running an application that demonstrates various controls . . . . . . 11
1.4 The Programming Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.5 Visual Studio and Visual Basic Express (the Visual Basic Environment) . . . . . 21
TUTORIAL 1-4: Starting Visual Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TUTORIAL 1-5: Opening the Design, Solution Explorer, Dynamic Help,
and Properties windows in Visual Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TUTORIAL 1-6: Getting familiar with Visual Studio . . . . . . . . . . . . . . . . . . . . . . . . . 32
Summary 34 • Key Terms 34 • Review Questions and Exercises 35 •
Programming Challenges 39
Chapter 2 Creating Applications with Visual Basic 41
2.1 Focus on Problem Solving: Building the Directions Application . . . . . . . . . . 41
TUTORIAL 2-1: Beginning the Directions application . . . . . . . . . . . . . . . . . . . . . . . . 44
TUTORIAL 2-2: Adding a Label control to the Directions application . . . . . . . . . . . 46
TUTORIAL 2-3: Setting the Label’s TextAlign property . . . . . . . . . . . . . . . . . . . . . . . 48
TUTORIAL 2-4: Changing the Label’s font size and style . . . . . . . . . . . . . . . . . . . . . 49
TUTORIAL 2-5: Deleting a control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
TUTORIAL 2-6: Inserting a PictureBox control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
TUTORIAL 2-7: Saving and running the application . . . . . . . . . . . . . . . . . . . . . . . . . 52
TUTORIAL 2-8: Closing a Visual Basic project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
TUTORIAL 2-9: Opening an existing project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
TUTORIAL 2-10: Using the Object box, Alphabetical
button, and Categorized button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
2.2 Focus on Problem Solving: Responding to Events . . . . . . . . . . . . . . . . . . . . 59
TUTORIAL 2-11: Placing the lblDirections, btnDisplayDirections,
and btnExit controls in the Directions application . . . . . . . . . . . . . . . . . . . 64
TUTORIAL 2-12: Writing event procedures for the Directions application . . . . . . . . 68
TUTORIAL 2-13: Changing the text colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
TUTORIAL 2-14: Setting the FormBorderStyle property
and locking the controls in the Directions application . . . . . . . . . . . . . . . . . 75
2.3 Modifying the Text Property with Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
TUTORIAL 2-15: Examining an application that displays messages . . . . . . . . . . . . . 76
v
vi Contents
2.4 The AutoSize, BorderStyle, and TextAlign Properties . . . . . . . . . . . . . . . . . . 78
2.5 Clickable Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
TUTORIAL 2-16: Writing Click event procedures for PictureBox controls . . . . . . . . 80
2.6 Using Visual Studio Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
TUTORIAL 2-17: Using Dynamic Help in Visual Studio . . . . . . . . . . . . . . . . . . . . . 85
2.7 Debugging Your Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
TUTORIAL 2-18: Locating a compile error in Design mode . . . . . . . . . . . . . . . . . . . 89
Summary 91 • Key Terms 92 • Review Questions and Exercises 92 •
Programming Challenges 95
Chapter 3 Variables and Calculations 99
3.1 Gathering Text Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
TUTORIAL 3-1: Using a TextBox control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
TUTORIAL 3-2: Building the Date String application . . . . . . . . . . . . . . . . . . . . . . . 103
TUTORIAL 3-3: Using the Focus method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
TUTORIAL 3-4: Changing the tab order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
TUTORIAL 3-5: Setting access keys, accept, and cancel buttons . . . . . . . . . . . . . . . 111
3.2 Variables and Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
TUTORIAL 3-6: Assigning text to a variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
3.3 Performing Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
3.4 Mixing Different Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
TUTORIAL 3-7: Examining a Simple Calculator application . . . . . . . . . . . . . . . . . . 140
3.5 Formatting Numbers and Dates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
TUTORIAL 3-8: Examining the Format Demo application . . . . . . . . . . . . . . . . . . . 146
3.6 Exception Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
TUTORIAL 3-9: Salary Calculation application with exception handling . . . . . . . . 153
3.7 Group Boxes and the Load Event Procedure . . . . . . . . . . . . . . . . . . . . . . . 155
3.8 Focus on Program Design and Problem Solving:
Building the Room Charge Calculator Application . . . . . . . . . . . . . . . . . . . . 158
TUTORIAL 3-10: Beginning the Room Charge Calculator application . . . . . . . . . . 162
TUTORIAL 3-11: Changing a label’s colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
3.9 More about Debugging: Locating Logic Errors . . . . . . . . . . . . . . . . . . . . . 168
TUTORIAL 3-12: Single-stepping through an application’s code at runtime . . . . . . 169
Summary 175 • Key Terms 178 • Review Questions and Exercises 179 •
Programming Challenges 185
Chapter 4 Making Decisions and Working with Strings 193
4.1 The Decision Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
4.2 The If...Then Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
TUTORIAL 4-1: Examining an application that uses the
If...Then statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
4.3 The If...Then...Else Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
TUTORIAL 4-2: Completing an application that uses the
If...Then...Else statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
4.4 The If...Then...ElseIf Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
TUTORIAL 4-3: Completing an application that uses the
If...Then...ElseIf statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Contents vii
TUTORIAL 4-4: Comparing an If...Then...ElseIf statement
to a series of If...Then statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
4.5 Nested If Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
TUTORIAL 4-5: Completing an application with a nested If statement . . . . . . . . . 212
4.6 Logical Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
4.7 Comparing, Testing, and Working with Strings . . . . . . . . . . . . . . . . . . . . . 220
TUTORIAL 4-6: Examining an application that performs
string comparisons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
TUTORIAL 4-7: Completing a string searching application . . . . . . . . . . . . . . . . . . . 228
4.8 Focus on GUI Design: The Message Box . . . . . . . . . . . . . . . . . . . . . . . . . . 231
4.9 The Select Case Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
TUTORIAL 4-8: Examining Crazy Al’s Sales Commission
Calculator application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
4.10 Introduction to Input Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
4.11 Focus on GUI Design: Radio Buttons and Check Boxes . . . . . . . . . . . . . . . 244
TUTORIAL 4-9: Completing an application with radio buttons
and check boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
4.12 Class-Level Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
4.13 Focus on Program Design and Problem Solving: Building the
Health Club Membership Fee Calculator Application . . . . . . . . . . . . . . . . . . 249
TUTORIAL 4-10: Building the Health Club Membership Fee
Calculator application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Summary 259 • Key Terms 260 • Review Questions and Exercises 261 •
Programming Challenges 266
Chapter 5 Lists, Loops, Validation, and More 275
5.1 Input Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
5.2 List Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
TUTORIAL 5-1: Creating list boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
5.3 Introduction to Loops: The Do While Loop . . . . . . . . . . . . . . . . . . . . . . . . 287
TUTORIAL 5-2: Completing an application that uses the Do While loop . . . . . . . . 288
TUTORIAL 5-3: Modifying the Do While Demo application
to use a posttest loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
TUTORIAL 5-4: Using a loop to keep a running total . . . . . . . . . . . . . . . . . . . . . . . 293
TUTORIAL 5-5: Examining an application that uses a user-controlled loop . . . . . . 297
5.4 The Do Until and For...Next Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
TUTORIAL 5-6: Examining an application that uses the Do Until loop . . . . . . . . 300
TUTORIAL 5-7: Examining an application that uses the For...Next loop . . . . . . 302
TUTORIAL 5-8: Completing an application that uses the For...Next loop . . . . . . 304
5.5 Nested Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
5.6 Multicolumn List Boxes, Checked List Boxes, and Combo Boxes . . . . . . . 309
TUTORIAL 5-9: Creating combo boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
5.7 Input Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
TUTORIAL 5-10: Completing an application that demonstrates
input validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
TUTORIAL 5-11: An example of inconvenient data input correction . . . . . . . . . . . 320
TUTORIAL 5-12: Modifying the Validation Demo project
to use the SelectAll method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
viii Contents
5.8 ToolTips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
TUTORIAL 5-13: Adding ToolTips to an application . . . . . . . . . . . . . . . . . . . . . . . 324
5.9 Focus on Program Design and Problem Solving:
Building the Vehicle Loan Calculator Application . . . . . . . . . . . . . . . . . . . . 325
TUTORIAL 5-14: Building the Vehicle Loan Calculator application . . . . . . . . . . . . 334
Summary 339 • Key Terms 340 • Review Questions and Exercises 340 •
Programming Challenges 347
Chapter 6 Procedures and Functions 355
6.1 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
TUTORIAL 6-1: Examining an application with a procedure . . . . . . . . . . . . . . . . . 356
TUTORIAL 6-2: Creating a procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
6.2 Passing Arguments to Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
TUTORIAL 6-3: Examining an application that demonstrates
passing an argument to a procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
TUTORIAL 6-4: Working with ByVal and ByRef . . . . . . . . . . . . . . . . . . . . . . . . . . 371
6.3 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
TUTORIAL 6-5: Examining the GPA Calculator application . . . . . . . . . . . . . . . . . . 376
6.4 More about Debugging: Stepping Into, Over, and
Out of Procedures and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
TUTORIAL 6-6: Practicing the Step Into, Step Over,
and Step Out commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
6.5 Focus on Program Design and Problem Solving:
Building the Bagel and Coffee Price Calculator Application . . . . . . . . . . . . . 385
TUTORIAL 6-7: Building the Bagel House application . . . . . . . . . . . . . . . . . . . . . . 395
Summary 399 • Key Terms 400 • Review Questions and Exercises 400 •
Programming Challenges 404
Chapter 7 Multiple Forms, Standard Modules, and Menus 411
7.1 Multiple Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
TUTORIAL 7-1: Completing an application that displays modal
and modeless forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
TUTORIAL 7-2: Completing an application with multiple forms . . . . . . . . . . . . . . 426
7.2 Standard Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
TUTORIAL 7-3: Examining an application that uses a standard module . . . . . . . . . 435
7.3 Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
TUTORIAL 7-4: Building a menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447
7.4 Focus on Problem Solving: Building the High Adventure
Travel Agency Price Quote Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
TUTORIAL 7-5: Building the High Adventure Travel Agency
Price Quote application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
Summary 473 • Key Terms 474 • Review Questions and Exercises 474 •
Programming Challenges 479
Chapter 8 Arrays, Timers, and More 489
8.1 Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 489
TUTORIAL 8-1: Completing an application that uses an array . . . . . . . . . . . . . . . . 498
Contents ix
8.2 More about Array Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
TUTORIAL 8-2: Examining an application that uses parallel arrays . . . . . . . . . . . . 505
8.3 Procedures and Functions That Work with Arrays . . . . . . . . . . . . . . . . . . . 512
TUTORIAL 8-3: Examining an application with functions and with arrays . . . . . . . 514
8.4 Multidimensional Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518
TUTORIAL 8-4: Completing an application that sums the rows
of a two-dimensional array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520
8.5 Focus on GUI Design: The Enabled Property, Timer Control,
and Splash Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525
TUTORIAL 8-5: The Timer Demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 527
TUTORIAL 8-6: Creating a splash screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529
8.6 Focus on GUI Design: Anchoring and Docking Controls . . . . . . . . . . . . . . 531
8.7 Random Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534
TUTORIAL 8-7: Examining the CatchMe application . . . . . . . . . . . . . . . . . . . . . . . 535
8.8 Focus on Problem Solving: Building the Demetris
Leadership Center Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538
TUTORIAL 8-8: Building the Demetris Leadership Center Sales
Reporting application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541
Summary 546 • Key Terms 547 • Review Questions and Exercises 548 •
Programming Challenges 553
Chapter 9 Files, Printing, and Structures 561
9.1 Using Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 561
TUTORIAL 9-1: Completing an application that writes data to a file . . . . . . . . . . . 566
TUTORIAL 9-2: Completing an application that reads a file . . . . . . . . . . . . . . . . . . 571
TUTORIAL 9-3: Examining an application that detects the end of a file . . . . . . . . . 576
9.2 The OpenFileDialog, SaveFileDialog, FontDialog,
and ColorDialog Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580
TUTORIAL 9-4: Creating a simple text editor application . . . . . . . . . . . . . . . . . . . . 584
9.3 The PrintDocument Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 593
TUTORIAL 9-5: Adding printing capabilities to the Simple
Text Editor application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594
9.4 Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 599
TUTORIAL 9-6: Examining an application with a structure . . . . . . . . . . . . . . . . . . 602
9.5 Focus on Problem Solving: Modifying the Demetris Leadership
Center Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604
TUTORIAL 9-7: Modifying the Demetris Leadership Center
Sales Reporting application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 605
Summary 613 • Key Terms 614 • Review Questions and Exercises 614 •
Programming Challenges 620
Chapter 10 Working with Databases 625
10.1 Database Management Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625
10.2 Database Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 626
10.3 DataGridView Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 630
TUTORIAL 10-1: Showing a database table in a DataGridView control . . . . . . . . . 631
TUTORIAL 10-2: Sorting and updating the SalesStaff table . . . . . . . . . . . . . . . . . . . 638