Professional C# 2008 phần 1 pdf

C# 2008Christian Nagel Bill Evjen Jay Glynn Morgan Skinner Karli Watson Wiley Publishing, Inc... C# 2008Christian Nagel Bill Evjen Jay Glynn Morgan Skinner Karli Watson Wiley Publishing,

C# 2008

Christian Nagel Bill Evjen Jay Glynn Morgan Skinner Karli Watson

Wiley Publishing, Inc.

C# 2008

(Continued)

Acknowledgments xiii

Introduction xlvii Part I: The C# Language Chapter 1: NET Architecture 3

Chapter 2: C# Basics 25

Chapter 3: Objects and Types 75

Chapter 4: Inheritance 101

Chapter 5: Arrays 121

Chapter 6: Operators and Casts 141

Chapter 7: Delegates and Events 177

Chapter 8: Strings and Regular Expressions 203

Chapter 9: Generics .223

Chapter 10: Collections 247

Chapter 11: Language Integrated Query 297

Chapter 12: Memory Management and Pointers 329

Chapter 13: Reflection 357

Chapter 14: Errors and Exceptions 377

Part II: Visual Studio Chapter 15: Visual Studio 2008 401

Chapter 16: Deployment 443

Part III: Base Class Libraries Chapter 17: Assemblies 469

Chapter 18: Tracing and Events 509

Chapter 19: Threading and Synchronization 533

Chapter 20: Security 583

Chapter 21: Localization 639

Chapter 22: Transactions .679

Chapter 23: Windows Services 715

Chapter 24: Interoperability 749

Part IV: Data

Chapter 25: Manipulating Files and the Registry 791

Chapter 26: Data Access 845

Chapter 27: LINQ to SQL 895

Chapter 28: Manipulating XML 921

Chapter 29: LINQ to XML 967

Chapter 30:.NET Programming with SQLServer 985

Part V: Presentation Chapter 31: Windows Forms 1017

Chapter 32: Data Binding 1061

Chapter 33: Graphics with GDI+ 1093

Chapter 34: Windows Presentation Foundation 1149

Chapter 35: Advanced WPF 1199

Chapter 36: Add-Ins .1251

Chapter 37: ASP.NET Pages 1273

Chapter 38: ASP.NET Development .1311

Chapter 39: ASP.NET AJAX 1355

Chapter 40: Visual Studio Tools for Office .1385

Part VI: Communication Chapter 41: Accessing the Internet .1423

Chapter 42: Windows Communication Foundation .1455

Chapter 43: Windows Workflow Foundation 1487

Chapter 44: Enterprise Services 1527

Chapter 45: Message Queuing 1555

Chapter 46: Directory Services 1587

Chapter 47: Peer-to-Peer Networking 1625

Chapter 48: Syndication 1643

Part VII: Appendices Appendix A: ADO.NET Entity Framework 1655

Appendix B: C#, Visual Basic, and C++/CLI .1681

Appendix C: Windows Vista and Windows Server 2008 1711

Index 1731

C# 2008

C# 2008

Christian Nagel Bill Evjen Jay Glynn Morgan Skinner Karli Watson

Wiley Publishing, Inc.

Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana

Published simultaneously in Canada

ISBN: 978-0-470-19137-8

Manufactured in the United States of America

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Congrats and keep moving forward in C# land!

—Bill Evjen

for Donna

—Karli Watson

To my parents, Joan and Donald Skinner, for their ever present love, support, and encouragement

The world was made a sweeter place by their being in it and their memory will be cherished forever

Thanks Mum & Dad — you were brilliant.

“Love is as strong as death.

Many waters cannot quench love, neither can the floods drown it.” (Song of Songs 8: 6 -7)

—Morgan Skinner

Christian Nagel of thinktecture is a software architect and developer who offers training and consulting

on how to design and develop Microsoft NET solutions He looks back on more than 20 years of software development experience Christian started his computing career with PDP 11 and VAX/VMS platforms, covering a variety of languages and platforms Since the year 2000, when NET was just a technology preview, he has been working with various NET technologies to build numerous NET solutions With his profound knowledge of Microsoft technologies, he has written numerous NET books, and is certified

as a Microsoft Certified Trainer and Professional Developer for ASP.NET Christian speaks at international conferences such as TechEd and Tech Days, and supports NET user groups with INETA Europe You can contact Christian via his Web sites, www.christiannagel.com and www.thinktecture.com

Bill Evjen, Microsoft MVP is an active proponent of NET Technologies and community - based

learning initiatives for NET He has been actively involved with NET since the first bits were released

in 2000 In the same year, Bill founded the St Louis NET User Group ( www.stlnet.org ), one of the world ’ s first such groups Bill is also the founder and former executive director of the International NET Association ( www.ineta.org ), which represents more than 450,000 members worldwide

Based in St Louis, Missouri, Bill is an acclaimed author (more than 15 books to date) and speaker

on ASP.NET and SML Web services In addition to writing and speaking at conferences such as DevConnections, VSLive, and TechEd, Bill works closely with Microsoft as a Microsoft regional director Bill is the technical architect for Lipper ( www.lipperweb.com ), a wholly owned subsidiary of Reuters, the international news and financial services company He graduated from Western Washington University in Bellingham, Washington with a Russian language degree When he isn ’ t tinkering on the computer, he can usually be found at his summer house in Toivakka, Finland You can reach Bill at

evjen@yahoo.cpm

Morgan Skinner began his computing career at a young age on the Sinclair ZX80 at school, where he

was underwhelmed by some code a teacher had written and so began programming in assembly language Since then he ’ s used all sorts of languages and platforms, including VAX Macro Assembler, Pascal, Modula2, Smalltalk, X86 assembly language, PowerBuilder, C/C++, VB, and currently C# (of course) He ’ s been programming in NET since the PDC release in 2000, and liked it so much he joined Microsoft in 2001 He now works in premier support for developers and spends most of his time assisting customers with C# You can reach Morgan at www.morganskinner.com

Jay Glynn started writing software nearly 20 years ago, writing applications for the PICK operating

system using PICK basic Since then, he has created software using Paradox PAL and Object PAL, Delphi, VBA, Visual Basic, C, C++, Java, and of course, C# He is currently a project coordinator and architect for a large financial services company in Nashville, Tennessee, working on software for the TabletPC platform You can contact Jay at jlsglynn@hotmail.com

Karli Watson is a freelance author and a technical consultant of 3form Ltd ( www.3form.net ) and Boost net, and an associate technologist at Content Master ( www.contentmaster.com ) He started out with the intention of becoming a world - famous nanotechnologist, so perhaps one day you might recognize his name as he receives a Nobel Prize For now, though, Karli ’ s main academic interest is the NET Framework, and all the boxes of tricks it contains A snowboarding enthusiast, Karli also loves cooking, spends far too much time playing Anarchy Online and EVE, and wishes he had a cat As yet, nobody has seen fit to publish Karli ’ s first novel, but the rejection letters make an attractive pile If he ever puts anything up there, you can visit Karli online at http://www.karliwatson.com

Ron Strauss

somewhat on schedule Other big thanks go to all the editors of the book including Lori Cerreto, Daniel

Scribner, and the copyeditors

Finally, to the ones that paid the biggest price for this writing session — my wife, Tuija, and the three kids: Sofia, Henri, and Kalle Thanks for all you do!

Karli Watson:

Thanks to all at Wiley for helping me through this project and reigning in my strange British stylings,

to assorted clients for giving me the time to write, and to Donna for keeping me sane and coping with

my temperamental back Thanks also to friends and family for being patient with my deadline - laden lifestyle

Acknowledgments xiii Introduction xlvii

xvii

xix

Summary 355

xxii

Reflection 365

Summary 376

Summary 397

xxiii

Versioning 499

xxvi

Encryption 591

xxviii

Using COM Objects from within ASP NET 771

Summary 787

Commands 855

Calling the Products Table Using LINQ to SQL — Creating the Console Application 897

Summary 965

Summary 983

Microsoft.SqlServer.Server 987

Summary 1092

Summary 1309

Security 1331

Summary 1418

Contracts 1467

Workflows 1508

Summary 1585

System.Net.PeerToPeer 1633 System.Net.PeerToPeer.Collaboration 1638 Summary 1642

xliv

Object Query 1670

Updates 1674

Introduction

If we were to describe the C# language and its associated environment, the NET Framework, as the most important new technology for developers for many years, we would not be exaggerating .NET is designed to provide a new environment within which you can develop almost any application to run on Windows, whereas C# is a new programming language that has been designed specifically to work with NET Using C# you can, for example, write a dynamic Web page, an XML Web service, a component of a distributed application, a database access component, a classic Windows desktop application, or even a new smart client application that allows for online/offline capabilities This book covers the NET Framework 3.5 If you are coding using version 1.0, 1.1, 2.0, or even 3.0, there may be sections of the book that will not work for you We try to notify you of items that are new to the NET Framework 3.5

specifically

Don ’ t be fooled by the NET label The NET bit in the name is there to emphasize Microsoft ’ s belief that distributed applications, in which the processing is distributed between client and server, are the way forward, but C# is not just a language for writing Internet or network - aware applications It provides a means for you to code up almost any type of software or component that you might need to write for the Windows platform Between them, C# and NET are set both to revolutionize the way that you write programs, and to make programming on Windows much easier than it has ever been

That ’ s quite a substantial claim, and it needs to be justified After all, we all know how quickly computer technology changes Every year Microsoft brings out new software, programming tools, or versions of Windows, with the claim that these will be hugely beneficial to developers So what ’ s different about NET and C#?

The Significance of NET and C#

In order to understand the significance of NET, it is useful to remind ourselves of the nature of many of the Windows technologies that have appeared in the past 10 years or so Although they may look quite different on the surface, all of the Windows operating systems from Windows 3.1 (introduced in 1992) through Windows Server 2008 have the same familiar Windows API at their core As we ’ ve progressed through new versions of Windows, huge numbers of new functions have been added to the API, but this has been a process of evolving and extending the API rather than replacing it

The same can be said for many of the technologies and frameworks that we ’ ve used to develop software

for Windows For example, COM ( Component Object Model ) originated as OLE ( Object Linking and

Embedding ) At the time, it was, to a large extent, simply a means by which different types of Office

documents could be linked, so that, for example, you could place a small Excel spreadsheet in your Word

document From that it evolved into COM, DCOM ( Distributed COM ), and eventually COM+ — a

sophisticated technology that formed the basis of the way almost all components communicated, as well

as implementing transactions, messaging services, and object pooling

Microsoft chose this evolutionary approach to software for the obvious reason that it is concerned about backward compatibility Over the years, a huge base of third - party software has been written for Windows, and Windows wouldn ’ t have enjoyed the success it has had if every time Microsoft introduced a new technology it broke the existing code base!

Although backward compatibility has been a crucial feature of Windows technologies and one of the strengths of the Windows platform, it does have a big disadvantage Every time some technology evolves and adds new features, it ends up a bit more complicated than it was before