Application development using Csharp and .NET

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Table of

Contents

Application Development Using C# and .NET

By Michael Stiefel, Robert J. Oberg

Publisher: Prentice Hall PTR

Pub Date: December 21, 2001

ISBN: 0-13-093383-X

Pages: 656

Slots: 1

Copyright

The Integrated .NET Series From Object Innovations

Preface

Organization

Sample Programs

Caveat

Web Sites

Acknowledgments

The Integrated .NET Series from Object Innovations and Prentice Hall PTR

Introduction

Introductory .NET Language Books

Introduction to C# Using .NET

Introduction to Programming Visual Basic Using .NET

Programming Perl in the .NET Environment

Intermediate .NET Framework Books

Application Development Using C# and .NET

Application Development Using Visual Basic .NET

.NET Architecture and Programming Using Visual C++

Fundamentals of Web Applications Using .NET and XML

Chapter 1. What Is Microsoft .NET?

Microsoft and the Web

Windows on the Desktop

A New Programming Platform

The Role of XML

Summary

Chapter 2. .NET Fundamentals

Problems of Windows Development

Applications of the Future

.NET Overview

Summary

Chapter 3. C# Overview for Sophisticated Programmers

Hello World in C#

Performing Calculations in C#

Classes

C# Type System

Strings

Arrays and Indexers

More about Methods

Exceptions

Unsafe Code

Summary

Chapter 4. Object-Oriented Programming in C #

Review of Object-Oriented Concepts

Acme Travel Agency Case Study: Design

Inheritance in C#

Access Control

Acme Travel Agency Case Study: Implementation

More about Inheritance

Summary

Chapter 5. C# in the .NET Framework

System.Object

Collections

Interfaces

Acme Travel Agency Case Study: Step 2

Generic Interfaces in .NET

Delegates

Attributes

Summary

Chapter 6. User Interface Programming

Windows Forms Hierarchy

Simple Forms Using .NET SDK

Menus

Controls

Visual Studio.NET and Forms

Dialog Boxes

ListBox Control

Acme Travel Agency Case Study—Step 3

Summary

Chapter 7. Assemblies and Deployment

Assemblies

Private Assembly Deployment

Shared Assembly Deployment

Assembly Configuration

Multimodule Assemblies

Setup and Deployment Projects

Summary

Chapter 8. .NET Framework Classes

Metadata and Reflection

Input and Output in .NET

Serialization

.NET Application Model

Context

Application Isolation

Asynchronous Programming

Remoting

Custom Attributes

Garbage Collection and Finalization

Summary

Chapter 9. Programming with ADO.NET

.NET Data Providers

The Visual Studio.NET Server Explorer

Data Readers

Parameters Collection

SqlDataAdapter and the DataSet Class

DataSet Collections

DataSet Fundamentals

Database Transactions and Updates

Optimistic vs. Pessimistic Locking and the DataSet

Working with DataSets

Acme Travel Agency Case Study

XML Data Access

AirlineBrokers Database

Schema with Relationships

Typed DataSet

Summary

Chapter 10. ASP.NET and Web Forms

What Is ASP.NET?

Web Forms Architecture

Request/Response Programming

Web Applications Using Visual Studio.NET

Acme Travel Agency Case Study

ASP.NET Applications

State in ASP.NET Applications

ASP.NET Configuration

Server Controls

HTML Server Controls

Database Access in ASP.NET

Summary

Chapter 11. Web Services

Protocols

Web Service Architecture

SOAP Differences

Web Service Class

Hotel Broker Web Service

Summary

Chapter 12. Security

User-Based Security

Code Access Security

Internet Security

Role-Based Security in .NET

Forms-Based Authentication

Code Access Permissions

Code Identity

Security Policy

Summary

Chapter 13. Tracing and Debugging in .NET

The TraceDemo Example

Enabling Debug and Trace Output

Using the Debug and Trace Classes

Using Switches to Enable Diagnostics

Enabling or Disabling Switches

TraceListener

Listeners Collection

Summary

Chapter 14. Interoperability

Calling COM Components from Managed Code

Calling Managed Components from COM Client

Platform Invocation Services (PInvoke)

Summary

Appendix A. Visual Studio.NET

Overview of Visual Studio.NET

Creating a Console Application

Project Configurations

Debugging

Summary

Copyright

Library of Congress Cataloging-in-Publication Data

Stiefel, Michael.

Application development using C# and .NET / Michael Stiefel, Robert J. Oberg

p. cm.

1. System design. 2. Computer software—Development. 3. C# (Computer

program language). I. Oberg, Robert J. II. Title.

QA76.9.S88 S745 2002

005.2'768—-dc21

2001056574

Editorial/Production Supervision: Nick Radhuber

Acquisitions Editor: Jill Harry

Marketing Manager: Dan DePasquale

Manufacturing Buyer: Maura Zaldivar

Cover Design: Anthony Gemmellaro

Cover Design Direction: Jerry Votta

Interior Series Design: Gail Cocker-Bogusz

© 2002 by Michael Stiefel and Robert J. Oberg

Published by Prentice Hall PTR

Prentice-Hall, Inc.

Upper Saddle River, NJ 07458

Prentice Hall books are widely used by corporations and government agencies for

training, marketing, and resale.

The publisher offers discounts on this book when ordered in bulk quantities. For

more information, contact Corporate Sales Department, phone: 800-382-3419;

fax: 201-236-7141; email: [email protected] Or write: Corporate Sales

Department, Prentice Hall PTR, One Lake Street, Upper Saddle River, NJ 07458.

Product and company names mentioned herein are the trademarks or registered

trademarks of their respective owners.

All rights reserved. No part of this book may be reproduced, in any form or by

any means, without permission in writing from the publisher.

Printed in the United States of America

10 9 8 7 6 5 4 3 2 1

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Pearson Education, Upper Saddle River, New Jersey

Dedication

To the memory of

Dr. A. Edward Stefanacci, 1930-1993

To keep an adjunct to remember theeWere to import forgetfulness in me.

William Shakespeare Sonnet 122

The Integrated .NET Series From Object

Innovations

C#

● Introduction to C# Using .NET

Oberg

● Application Development Using C# and .NET

Stiefel/Oberg

Visual Basic

● Introduction to Programming Visual Basic Using .NET

Wyatt/Oberg

● Application Development Using Visual Basic and .NET

Oberg/Thorsteinson/Wyatt

Visual C++

● .NET Architecture and Programming Using Visual C++

Thorsteinson/Oberg

Web Applications

● Fundamentals of Web Applications Using .NET and XML

Bell/Feng/Soong/Zhang/Zhu

PERL

● Programming PERL in the .NET Environment

Saltzman/Oberg

Preface

Microsoft .NET is an advance in programming technology that greatly simplifies

application development both for traditional, proprietary applications, and for the

emerging paradigm of Web-based services. .NET is a complete restructuring of

Microsoft's whole system infrastructure and represents a major learning challenge

for programmers developing applications on Microsoft platforms. The new

platform includes a new programming language C# and a major class library, the

.NET Framework.

This book covers important topics in the .NET Framework for experienced

programmers. You do not need prior experience in C#, because there is a self￾contained treatment, but you should have experience in some object-oriented

language such as C++ or Java. The book could also be read by a seasoned Visual

Basic programmer who has experience working with objects and components in

VB.

If you already understand C#, you may safely skip or skim Chapters 3 and 4.

Chapter 5 contains important information about the interactions of C# and the

.NET Framework. You may then proceed with a detailed study of the .NET

Framework in Chapters 6 and beyond. For a thorough introduction to the C#

language you may read the book Introduction to C# Using .NET.

The book is practical, with many examples and a major case study. The goal is to

equip you to begin building significant applications using the .NET Framework.

The book is part of The Integrated .NET Series from Object Innovations and

Prentice Hall PTR.

Organization

The book is organized into five major parts, and is structured to make it easy for

you to navigate to what you most need to know. The first part, consisting of

Chapters 1 and 2, should be read by everyone. It answers the question "What is

Microsoft .NET?" and outlines the programming model of the .NET Framework.

The second part, consisting of Chapters 3-5, covers the C# programming

language. If you are already familiar with C# you can skim these chapters, paying

the most attention to Chapter 5, which covers topics such as interfaces, delegates,

and events. This chapter also describes important interactions between C# and the

.NET Framework. The case study, which is elaborated throughout the entire

book, is introduced in Chapter 4.

The third part, Chapters 6-9, covers important fundamental topics in the .NET

Framework. Chapter 6 covers user interface programming using the Windows

Forms classes. Chapter 7 discusses assemblies and deployment, which constitute

a major advance in the simplicity and robustness of deploying Windows

applications, ending the notorious "DLL hell." Chapter 8 delves into important

.NET Framework classes, including the topics of metadata, serialization,

threading, attributes, application domains, asynchronous programming, remoting,

and memory management. Chapter 9 covers ADO.NET, which provides a

consistent set of classes for accessing both relational and XML Data.

The fourth part of the book provides an in-depth introduction to Web

programming using ASP.NET and SOAP. Chapter 10 introduces the

fundamentals of ASP.NET, including the use of Web Forms, which greatly

simplifies the development of sophisticated Web sites. Chapter 11 covers SOAP

and Web Services, which provide an easy-to-use and robust mechanism for

heterogeneous systems to interoperate.

The final part of the book covers additional important topics in the .NET

Framework. Chapter 12 covers the topic of security in detail, including code

access security, declarative security, and the securing of Web applications and

services. Chapter 13 introduces the debug and trace classes provided by .NET.

Chapter 14 covers interoperability of .NET with COM and with Win32

applications.

Sample Programs

The only way to really learn a major framework is to read and write many, many

programs, including some of reasonable size. This book provides many small

programs that illustrate pertinent features of .NET in isolation, which makes them

easy to understand. The programs are clearly labeled in the text, and they can all

be found in the software distribution that accompanies this book.

A major case study, the Acme Travel Agency, is progressively developed in

Chapters 4 through 12. It illustrates many features of C# and .NET working in

combination, as they would in a practical application.

The sample programs are provided in a self-extracting file on the book's Web site.

When expanded, a directory structure is created, whose default root is

c:\OI\NetCs. The sample programs, which begin with the second chapter, are in

directories Chap02, Chap03, and so on. All the samples for a given chapter are

in individual folders within the chapter directories. The names of the folders are

clearly identified in the text. Each chapter that contains a step of the case study

has a folder called CaseStudy, containing that step. If necessary, there is a

readme.txt file in each chapter directory to explain any instructions necessary for

getting the examples to work.

This book is part of The Integrated .NET Series. The sample programs for other

books in the series are located in their own directories underneath \OI, so all the

.NET examples from all books in the series will be located in a common area as

you install them.

These programs are furnished solely for instructional purposes and should not be

embedded in any software product. The software (including instructions for use)

is provided "as is" without warranty of any kind.

Caveat

The book and the associated code were developed with Beta 2 of the .NET

Framework. Microsoft has indicated that this version of .NET is close to what

will be the final version. Nonetheless, changes will be made before .NET is

released. The code in the examples has been verified to work only with Windows

2000. Database code has been verified with SQL Server 2000. Several examples

in the database and security chapters have machine names embedded in

connection strings or role names. When trying to run these examples, you will

have to replace those names with the appropriate name for your machine. To

make installation easy, the database examples run with user name "sa" and

without a password. Needless to say, in a real system you should NEVER have

any login id without a password or have a database application use sa to log into a

database. [1]

[1] That is just one of several steps necessary to avoid an SQL Injection

attack.