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KEY SERIAL NUMBER
001 ANVE48952P
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PUBLISHED BY
Syngress Publishing, Inc.
800 Hingham Street
Rockland, MA 02370
ASP.NET WEB DEVELOPER’S GUIDE
Copyright © 2002 by Syngress Publishing, Inc.All rights reserved. Printed in the United States of America.
Except as permitted under the Copyright Act of 1976, no part of this publication may be reproduced or
distributed in any form or by any means, or stored in a database or retrieval system, without the prior
written permission of the publisher, with the exception that the program listings may be entered, stored,
and executed in a computer system, but they may not be reproduced for publication.
Printed in the United States of America
1 2 3 4 5 6 7 8 9 0
ISBN: 1-928994-51-2
Technical Editor: Jonothan Ortiz Freelance Editorial Manager: Maribeth Corona-Evans
Series Editor:Wei Meng Lee Cover Designer: Michael Kavish
Co-Publisher: Richard Kristof Page Layout and Art by: Shannon Tozier
Acquisitions Editor: Catherine B. Nolan Copy Editors: Janet Zunkel and Michael McGee
Developmental Editor: Kate Glennon Indexer: Robert Saigh
CD Production: Michael Donovan
Distributed by Publishers Group West in the United States and Jaguar Book Group in Canada.
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page iv
v
Acknowledgments
v
We would like to acknowledge the following people for their kindness and support
in making this book possible.
Richard Kristof and Duncan Anderson of Global Knowledge, for their generous
access to the IT industry’s best courses, instructors, and training facilities.
Ralph Troupe, Rhonda St. John, and the team at Callisma for their invaluable insight
into the challenges of designing, deploying, and supporting world-class enterprise
networks.
Karen Cross, Lance Tilford, Meaghan Cunningham, Kim Wylie, Harry Kirchner,
Kevin Votel, Kent Anderson, and Frida Yara of Publishers Group West for sharing
their incredible marketing experience and expertise.
Mary Ging, Caroline Hird, Simon Beale, Caroline Wheeler,Victoria Fuller, Jonathan
Bunkell, and Klaus Beran of Harcourt International for making certain that our
vision remains worldwide in scope.
Annabel Dent of Harcourt Australia for all their help.
David Buckland,Wendi Wong, Daniel Loh, Marie Chieng, Lucy Chong, Leslie Lim,
Audrey Gan, and Joseph Chan of Transquest Publishers for the enthusiasm with
which they receive our books.
Kwon Sung June at Acorn Publishing for his support.
Ethan Atkin at Cranbury International for his help in expanding the Syngress
program.
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page v
vi
Contributors
Todd Carrico (MCDBA, MCSE) is a Senior Database Engineer for
Match.com. Match.com is a singles portal for the digital age. In addition
to its primary Web site, Match.com provides back-end services to AOL,
MSN, and many other Web sites in its affiliate program.Todd specializes
in design and development of high-performance, high-availability data
architectures primarily on the Microsoft technology. His background
includes designing, developing, consulting, and project management for
companies such as Fujitsu,Accenture, International Paper, and
GroceryWorks.com.Todd resides in Sachse,TX, with his wife and two
children.
Jeremy Faircloth (CCNA, MCSE, MCP+I,A+) is a Systems Analyst for
Gateway, Inc. In this position, he develops and maintains enterprise-wide
client/server and Web-based technologies. He also acts as a technical
resource for other IT professionals, using his expertise to help others
expand their knowledge.As a Systems Analyst with over 10 years of real-
world IT experience, he has become an expert in many areas of IT
including Web development, database administration, enterprise security,
network design, and project management. Jeremy currently resides in
North Sioux City, SD and wishes to thank Christina Williams for her
support in his various technical endeavors.
Mesbah Ahmed (PhD and MS, Industrial Engineering) is a Professor of
Information Systems at the University of Toledo. In addition to teaching
and research, he provides technical consulting and training for IT and
manufacturing industries in Ohio and Michigan. His consulting experi-
ence includes systems design and implementation projects with Ford
Motors, Dana Corporation, Riverside Hospital, Sears, and others.
Currently, he provides IT training in the areas of Java Server, XML, and
.NET technologies. He teaches graduate level courses in Database
Systems, Manufacturing Systems, and Application Development in
Distributed and Web Environment. Recently, he received the University
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page vi
vii
of Toledo Outstanding Teaching award, and the College of Business
Graduate Teaching Excellence award. His current research interests are in
the areas of data warehousing and data mining. He has published many
research articles in academic journals such as Decision Sciences, Information
& Management, Naval Research Logistic Quarterly, Journal of Operations
Management, IIE Transaction, and International Journal of Production Research.
He has also presented numerous papers and seminars in many national
and international conferences.
Patrick Coelho (MCP) is an Instructor at The University of Washington
Extension, North Seattle Community College, Puget Sound Center, and
Seattle Vocational Institute, where he teaches courses in Web
Development (DHTML,ASP, XML, XSLT, C#, and ASP.NET). Patrick is
a Co-Founder of DotThatCom.com, a company that provides consulting,
online development resources, and internships for students. He is cur-
rently working on a .NET solution with contributing author David
Jorgensen and nLogix. Patrick holds a bachelor’s of Science degree from
the University of Washington, Bothell. Patrick lives in Puyallup,WA with
his wife Angela.
David Jorgensen (MCP) is an Instructor at North Seattle Community
College, University of Washington Extension campus, and Puget Sound
Centers. He is also developing courses for Seattle Vocational Institute,
which teach .NET and Web development to the underprivileged in the
Seattle area. David also provides internship opportunities through his
company DotThatCom.com, which does online sample classes and chap-
ters of books. David holds a bachelor’s degree in Computer Science from
St. Martin’s College and resides in Puyallup,WA with his wife Lisa and
their two sons Scott and Jacob.
Adam Sills is an Internet Programmer at GreatLand Insurance, a small
insurance company parented by Kemper Insurance. He works in a small
IT department that focuses on creating applications to expedite business
processes and manage data from a multitude of locations. Previously, he
had a small stint in consulting and also worked at a leading B2B
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page vii
viii
eCommerce company designing and building user interfaces to interact
with a large-scale enterprise eCommerce application.Adam’s current
duties include building and maintaining Web applications, as well as
helping to architect, build, and deploy new Microsoft .NET technologies
into production use.Adam has contributed to the writing of a number of
books for Syngress and is an active member of a handful of ASP and
ASP.NET mailing lists, providing support and insight whenever he can.
Chris Garrett is the Technical Manager for a large European Web
agency. He has been working with Internet technologies since 1994 and
has provided technical and new media expertise for some of the world’s
biggest brands. Chris lives in Yorkshire, England, with his wife Clare and
his daughter Amy.
Chris Payne, author of Teach Yourself ASP.NET in 21 Days, is the Co-
Founder and CIO of Enfused Media, Inc., which designs and develops
applications to automate and facilitate business processes. Chris has taught
ASP and solution techniques through articles and tutorials and has a
background in writing both technical and nontechnical material. Chris
holds a bachelor’s degree in Engineering from Boston University and is
currently lives with his wife, Eva, in Orlando, FL.
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page viii
ix
Technical Editor and Contributor
Jonothon Ortiz is Vice President of Xnext, Inc. in Winter Haven, FL.
Xnext, Inc. is a small, privately owned company that develops Web sites
and applications for prestigious companies such as the New York Times.
Jonothon is the head of the programming department and works together
with the CEO on all company projects to ensure the best possible solu-
tion. Jonothon lives with his wife Carla in Lakeland, FL.
Wei Meng Lee is Series Editor for Syngress Publishing’s .NET
Developer Series. He is currently lecturing at The Center for Computer
Studies, Ngee Ann Polytechnic, Singapore.Wei Meng is actively involved
in Web development work and conducts training for Web developers and
Visual Basic programmers. He has co-authored two books on WAP. He
holds a bachelor’s degree in Information Systems and Computer Science
from the National University of Singapore.The first book in the .NET
series, VB.NET Developer’s Guide (ISBN: 1-928994-48-2), is currently
available from Syngress Publishing.
Series Editor and Contributor
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page ix
x
This CD-ROM contains the code files that are used in each chapter of this book.
The code files for each chapter are located in a “chXX” directory. For example, the
files for Chapter 8 are in ch08.Any further directory structure depends on the pro-
jects that are presented within the chapter.
Chapters 4, 6, and 9 contain code that apply to the situations described in their
sections.This code will be extremely useful for understanding and enhancing the way
you use ASP.NET. Specifically, Chapter 4 has various examples on dealing with the
internal configuration of ASP.NET while Chapter 6 deals with how to optimize the
various caching methods available through ASP.NET and Chapter 9 contains code
on how to work with the debugging system of .NET with ASP.NET.
Chapters 3 and 8 contain code that deal with improved technologies in
ASP.NET. Chapter 3 discusses examples on how to work with ASP Server Controls
while Chapter 8 deals with a concise introduction to what XML is and how XML
affects .NET.
Chapters 7, 11, 12, and 13 contain low-to-heavy duty applications, exactly in that
order. Chapter 7 will introduce you to a sample application that deals with an address
book, from start to finish.This example code will also introduce you to how code
looks and operates in ASP.NET. Chapter 11, our XML.NET Guestbook, will show
you how XML in .NET can easily be worked with by using the standard classes
within ADO.NET, bridging the gap between XML and ADO. Chapters 12 and 13
take XML and ADO to the next level by introducing a Shopping Cart (Chapter 11)
and a Message Board (Chapter 13). Both applications in Chapters 12 and 13 require
an SQL Server backend, but either of these databases can be easily converted to an
Access database.
Look for this CD icon to obtain files used
in the book demonstrations.
About the CD
166_ASPNET_FM.qxd 11/26/01 1:40 PM Page x
Contents
xi
Foreword xxv
Chapter 1 Introducing ASP.NET 1
Introduction 2
Learning from the History of ASP 2
The Origins of ASP 2
Why ASP Was Needed 3
Why ASP Was Not Originally Embraced 4
Developing ASP 1.x 5
Developing ASP 2.x 6
Major Changes with ASP 2 6
Weaknesses in the ASP 2 Model 7
Developing ASP 3.0 7
Final Changes to Original ASP Model 8
Weaknesses in the ASP 3 Model 8
The Need for a New ASP Model 9
The ASP Timeline 10
Reviewing the Basics of the ASP.NET Platform 11
Utilizing the Flexibility of ASP.NET 12
Converting Code into Multiple Languages 13
Comparing Improvements in ASP.NET to
Previous ASP Models 14
How Web Servers Execute ASP Files 15
Client-Server Interaction 16
Server-Side Processing 17
Compiling and Delivering ASP.NET Pages 18
Running ASP.NET Web Pages 19
Obtaining and Installing .NET 19
Creating Your First ASP.NET Application 20
Debugging ASP.NET
Applications
Debugging under classic
ASP was a hit-and-miss
affair, usually forcing the
developer to add
Response.Write
statements through the
code until he or she found
the failure point. ASP.NET
introduces much better
debugging, thanks to the
.NET Framework and
Common Language
Runtime (CLR).
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xii Contents
Upgrading from Classic ASP 26
Taking Security Precautions 28
Summary 29
Solutions Fast Track 29
Frequently Asked Questions 32
Chapter 2 ASP.NET Namespaces 35
Introduction 36
Reviewing the Function of Namespaces 36
Using Namespaces 37
Using the Microsoft.VisualBasic Namespace 38
Understanding the Root Namespace: System 38
Supplied Functionality 38
Integral Numbers 39
Floating-Point Numbers 39
Dates 40
Strings 40
Booleans 40
Objects 40
Grouping Objects and Data Types with the
System.Collections Namespace 43
Supplied Functionality 43
Enabling Client/Browser Communication
with the System.Web Namespace 45
Supplied Functionality 45
System.Web.UI Namespace Set 46
System.Web.Services Namespace Set 51
Working with Data Sources Using the
System.Data Namespace 52
Supplied Functionality 52
Processing XML Files Using the System.XML
Namespace 53
Supplied Functionality 53
Summary 55
Solutions Fast Track 56
Frequently Asked Questions 58
Reviewing the
Function of
Namespaces
To use a namespace in an
ASP.NET page, you must
use the Import directive.
Unlike in classic ASP,
ASP.NET pages are
compiled before they are
run. You build ASP.NET
pages using a compiled
language, such as VB.NET
or C#.
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Contents xiii
Chapter 3 ASP Server Controls 61
Introduction 62
Major Features of ASP.NET Server Controls 62
Collecting Data Using HTML Forms 63
Server-Side Processing in ASP.NET 65
A Simple Application Using
Conventional HTML Controls 66
A Simple Application Using ASP Server
Controls 68
Mapping Server Controls and Preserving
Their States 69
Including Scripts in an .aspx File 69
Loading a List Box via Script 70
Using the IsPostBack Property of a Page 72
AutoPostBack Attributes of Server Controls 73
Structure of an ASP.NET Web Form 75
Page Directives 76
The Order of Event Execution 77
Code-Behind versus In-Page Coding 77
Using Code-Behind without Compilation 79
Using Code Behind with Compilation 81
Using VS.Net for Developing a Web
Application 84
Using HTML Server Controls 87
Using the HtmlAnchor Control 88
Using the HtmlTable Control 88
Using HtmlInputText and HtmlTextArea
Controls 90
Using HtmlButton and HtmlImage Controls 91
Using the HtmlInputFileControl 93
Using the HtmlSelect Control with
Data Binding to a SortedList Structure 95
Creating and Loading the SortedList 97
Using HtmlCheckBox and
HtmlInputRadioButton Controls 98
Using ASP.NET Web Controls 100
Developing ASP.NET
Web Forms
When you develop an
ASP.NET Web form, you
can use the following type
of controls:
■
HTML Server Controls
■
Web Server Controls
(also known as Web
Controls or ASP.NET
Web Form Controls)
■
Validation Controls
■
Custom Controls
166_ASPNET_toc.qxd 11/27/01 1:13 PM Page xiii
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