Beginning Visual Basic 2005 phần 1 potx

TEAM LinG Beginning Visual Basic ® 2005 01_574019 ffirs.qxd 9/16/05 9:31 PM Page i Beginning Visual Basic ® 2005 Thearon Willis and Bryan Newsome 01_574019 ffirs.qxd 9/16/05 9:31 PM Page iii 01_574019 ffirs.qxd 9/16/05 9:31 PM Page ii Beginning Visual Basic®2005 Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2006 by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN-10: 0-7645-7401-9 ISBN-13: 978-0-7645-7401-6 Manufactured in the United States of America 10987654321 1MA/QV/RQ/QV/IN Library of Congress Cataloging-in-Publication Data Willis, Thearon. Beginning Visual Basic 2005 / Thearon Willis and Bryan Newsome. p. cm. Includes bibliographical references and index. ISBN-13: 978-0-7645-7401-6 (paper/website) ISBN-10: 0-7645-7401-9 (paper/website) 1. Microsoft Visual BASIC. 2. BASIC (Computer program language) I. Newsome, Bryan, 1971- II. Title. QA76.73.B3W5573 2005 005.2'768 dc22 2005010385 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) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at www.wiley.com/go/permissions. LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRE- SENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WAR- RANTIES 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 PROFES- SIONAL 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 HERE- FROM. 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 RECOM- MENDATIONS 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 (800) 762-2974, outside the United States at (317) 572-3993 or fax (317) 572-4002. Trademarks: Wiley, the Wiley logo, Wrox, the Wrox logo, Programmer to Programmer, and related trade dress are trade- marks 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.Visual Basic is a registered trademark of Microsoft Corporation in the United States and/or other countries. All other trademarks are the property of their respective owners. Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. 01_574019 ffirs.qxd 9/16/05 9:31 PM Page iv About the Authors Thearon Willis is a Senior Consultant with over 20 years of programming experience. He started writing applications using the BASIC language in 1980 and later moved on to Visual Basic and finally to Visual Basic .NET. Thearon began working with databases in 1987 and has been hooked on writing database applications every since. He has experience with SQL Server, Oracle, and DB2 but works with SQL Server on a daily basis. Thearon has programmed in several other languages, some of which include C++, assembly lan- guage, Pascal, and COBOL. However, he enjoys Visual Basic .NET the best because it provides the fea- tures needed to quickly build Windows and Web applications, as well as components and Web Services. Thearon currently develops intranet applications, Web Services, and server-side and client-side utilities using Visual Basic .NET. Most of these applications and utilities are database-driven and make use of XML and XSL. Thearon lives with his wife Margie and daughter Stephanie in the Raleigh, North Carolina, area. Bryan Newsome works in Charlotte, North Carolina, as a custom software project manager specializing in Microsoft solutions. He leads a team of developers focused on meeting the needs of each client and project using the latest technologies. Each day, he helps provide clients with solutions and mentoring on leading-edge Microsoft technologies. Bryan is a Microsoft Certified Application Developer for .NET. 01_574019 ffirs.qxd 9/16/05 9:31 PM Page v 01_574019 ffirs.qxd 9/16/05 9:31 PM Page vi Credits Acquisitions Editor Katie Mohr Development Editor Sydney Jones Technical Editor Todd Meister Production Editor William A. Barton Copy Editor Publication Services, Inc. Editorial Manager Mary Beth Wakefield Vice President & Executive Group Publisher Richard Swadley Vice President and Publisher Joseph B. Wikert Project Coordinator Ryan Steffen Graphics and Production Specialists Andrea Dahl Lauren Goddard Lynsey Osborn Alicia South Julie Trippetti Quality Control Technicians Leeann Harney Carl William Pierce Media Development Specialists Angela Denny Kit Malone Travis Silvers Proofreading and Indexing TECHBOOKS Production Services 01_574019 ffirs.qxd 9/16/05 9:31 PM Page vii 01_574019 ffirs.qxd 9/16/05 9:31 PM Page viii As always, I want to thank my wife Margie and my daughter Stephanie for the patience they have shown while I write another book. Without their love and support, none of this would be possible. —Thearon Willis To all of the friends and family that make my life special in the past, present, and future: Jennifer (love you, honey), Katelyn, Mom (I miss you), Dad, Ashley and Leslie, Judy and Tony, Jennifer S. and Steven. All my love and happiness to each of you. —Bryan Newsome 01_574019 ffirs.qxd 9/16/05 9:31 PM Page ix [...]... Structures Understanding Arrays 11 4 11 6 11 8 11 8 11 9 12 0 12 2 12 3 12 4 12 4 12 4 12 4 12 5 12 5 Defining and Using Arrays Using For Each Next Passing Arrays as Parameters Sorting Arrays Going Backwards Initializing Arrays with Values 12 6 12 8 13 0 13 3 13 3 13 5 Understanding Enumerations 13 6 Using Enumerations Determining the State Setting Invalid Values 13 6 14 0 14 2 Understanding Constants 14 3 Using Constants How It... 14 3 14 5 14 5 14 5 14 6 14 9 14 9 15 0 15 3 15 6 15 7 15 8 15 9 16 1 Contents Using Hashtables Cleaning Up: Remove, RemoveAt, and Clear Case Sensitivity Advanced Array Manipulation Dynamic Arrays Using Preserve Summary Exercises Exercise 1 Exercise 2 Chapter 6: Building Windows Applications Responding to Events Setting Up a Button Event Building a Simple Application 16 1 16 4 16 7 16 8 16 8 17 0 17 1 17 2 17 2 17 2 17 3 17 3... 70 71 72 72 76 79 80 82 82 82 82 83 83 84 86 87 88 88 88 89 90 93 97 97 99 10 0 10 3 10 6 10 7 10 8 10 8 The For Next Loop 10 9 Step Looping Backwards 11 1 11 2 The For Each Next Loop 11 3 xiii Contents The Do Loop Loops Do While Loop Acceptable Expressions for a Do Loop Other Versions of the Do Loop Nested Loops Quitting Early Quitting Do Loops Infinite Loops Summary Exercises Exercise 1. .. Need to Run Visual Basic 2005? Conventions Customer Support How to Download the Sample Code for the Book Errata p2p.wrox.com Why This System Offers the Best Support Chapter 1: Welcome to Visual Basic 2005 Windows Versus DOS Programming Installing Visual Basic 2005 The Visual Basic 2005 IDE The Profile Setup Page The Menu The Toolbars Creating a Simple Application Windows in the Visual Studio 2005 IDE... Visual Basic 2005 Standard Edition ❑ Microsoft Visual Basic 2005 Professional Edition ❑ Microsoft Visual Basic 2005 Team System or or or As the later chapters cover more advanced subject areas, you will need other software to get the most out of them Also, Visual Basic 2005 Express does not support creating Web applications, mobile applications, and deployment projects: xxx Introduction ❑ Chapter 15 ... Binding Example How It Works: FillDataSetAndView Summary Exercises Exercise 1 Exercise 2 Chapter 17 : Web Forms Thin-Client Architecture Web Forms versus Windows Forms Windows Forms Advantages Web Forms Advantages Web Applications: The Basic Pieces Web Servers Browsers 511 515 516 517 518 525 546 547 547 547 549 550 5 51 5 51 5 51 552 552 552 xxi Contents HyperText Markup Language VBScript and JavaScript... VS 2005 Summary Exercise Chapter 18 : Forms Authentication Web Site Authentication Windows Authentication Forms Authentication Web Site Administration Tool (WAT) How It Works Login Controls Summary Exercises Exercise 1 Exercise 2 Chapter 19 : Visual Basic 2005 and XML Understanding XML What Does XML Look Like? XML for Visual Basic Newcomers 552 553 553 553 553 554 554 554 554 554 555 555 5 61 565 5 71 575... Introduction Visual Basic 2005 is Microsoft’s latest version of the highly popular Visual Basic NET programming language, one of the many languages supported in Visual Studio 2005 Visual Basic 2005 s strength lies in its ease of use and the speed at which you can create Windows applications, Web applications, mobile device applications, and Web Services In this book, we will introduce you to programming with Visual. .. Displaying Dialog Boxes The MessageBox Dialog Box Available Icons for MessageBox Available Buttons for MessageBox Setting the Default Button Miscellaneous Options The Show Method Syntax 18 6 18 6 19 0 19 1 19 1 19 4 19 8 19 9 19 9 203 203 203 203 205 205 206 207 207 207 208 xv Contents Example Message Boxes The OpenDialog Control The OpenFileDialog Control The Properties of OpenFileDialog The Methods of OpenFileDialog... Control How It Works Summary Exercises Exercise 1 Exercise 2 Chapter 8: Creating Menus Understanding Menu Features Images Access Keys Shortcut Keys Check Marks The Properties Window Creating Menus Designing the Menus Adding Toolbars and Controls Coding Menus xvi 209 213 213 214 215 216 220 220 2 21 2 21 225 225 226 226 229 230 2 31 232 233 234 234 234 234 2 41 242 242 244 245 246 246 246 247 247 248 248 . LinG Beginning Visual Basic ® 2005 01_ 574 019 ffirs.qxd 9 /16 /05 9: 31 PM Page i Beginning Visual Basic ® 2005 Thearon Willis and Bryan Newsome 01_ 574 019 ffirs.qxd 9 /16 /05 9: 31 PM Page iii 01_ 574 019 . Loop 11 8 Other Versions of the Do . . . Loop 11 8 Nested Loops 11 9 Quitting Early 12 0 Quitting Do . . . Loops 12 2 Infinite Loops 12 3 Summary 12 4 Exercises 12 4 Exercise 1 124 Exercise 2 12 4 Chapter. Hashtables 16 1 Cleaning Up: Remove, RemoveAt, and Clear 16 4 Case Sensitivity 16 7 Advanced Array Manipulation 16 8 Dynamic Arrays 16 8 Using Preserve 17 0 Summary 17 1 Exercises 17 2 Exercise 1 172 Exercise