Tài liệu Beginning ASP.NET 1.1 with Visual C#® .NET 2003

Introduction xxi
Chapter 1: Getting Started with ASP.NET 1
What Is a Static Web Page? 2
How Are Static Web Pages Served? 3
Limitations of Static Web Pages 4
What Is a Web Server? 5
How Are Dynamic Web Pages Served? 6
Client-Side Dynamic Web Pages 6
Server-Side Dynamic Web Pages 7
What Is ASP.NET? 9
How Does ASP.NET Differ from ASP? 9
Using C# with ASP.NET 10
I'm Still Confused about ASP, ASP.NET, and C# 11
The Installation Process 11
Which Operating System Do You Have? 11
Prerequisites for Installing ASP.NET 12
Try It Out Installing MDAC 2.8 13
Installing ASP.NET and the .NET Framework 13
Try It Out Installing the .NET Framework Redistributable 14
Installing Web Matrix 15
Try It Out Installing Web Matrix 16
Configuring Web Matrix to Run with .NET Framework 1.1 18
Try It Out Configuring Web Matrix 18
Running Web Matrix and Setting Up the Web Server 19
Try It Out Starting the Web Server 19
ASP.NET Test Example 25
Try It Out Your First ASP.NET Web Page 25
ASP.NET Troubleshooting 28
Page Cannot Be Displayed: HTTP Error 403 29
Page Cannot Be Found: HTTP Error 404 30
Web Page Unavailable While Offline 31
I Just Get a Blank Page 31
The Page Displays the Message But Not the Time 31
I Get an Error Statement Citing a Server Error 32
I Have a Different Problem 33
Summary 33
x
Contents
Chapter 2: Anatomy of an ASP.NET Page 35
What Is .NET? 35
From Your Code to Machine Code 37
Introducing Two Intermediate Languages 37
Objects 38
The .NET Base Classes 39
The Class Browser 40
How ASP.NET Works 41
Saving Your ASP.NET Files with an ASPX Suffix 42
Inserting ASP.NET Code into Our Web Pages 42
Try It Out Inserting Server-Side (ASP.NET) Code 44
Try It Out Interweaving ASP.NET Output with HTML 49
ASP.NET in Action 51
Binding to a Database 51
Try It Out Binding to a Database 51
Binding to a Simple XML File 54
Try It Out Binding to a Simple XML Document 54
Summary 57
Exercises 58
Chapter 3: Server Controls and Variables 59
Forms 60
Web Pages, HTML Forms, and Web Forms 60
Request and Response in Non-ASP.NET Pages 61
Where ASP.NET Fits in with the .NET Framework 63
The <form> Tag in ASP.NET 64
Using ASP.NET Server Controls 64
<asp:Label> 65
Try It Out Using the <asp:Label> Control 67
Modifying ASP.NET Controls 68
<aspdata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEXh5PJm+yKVAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=" class="mceSmilieSprite mceSmilie8" alt="" title="Big Grin ">ropDownList> 69
Try It Out Using the <asp[IMG]data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEXh5PJm+yKVAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=" class="mceSmilieSprite mceSmilie8" alt="" title="Big Grin ">ropDownList> Control 69
<asp:ListBox> 73
Try It Out Using the <asp:ListBox> Control 73
<asp:TextBox> 75
Try It Out Using the <asp:TextBox> Control 75
<asp:RadioButtonList> and <asp:RadioButton> 77
Try It Out Using the <asp:RadioButtonList> Control 78
<asp:CheckBox> and <asp:CheckBoxList> 79
Try It Out Using the <asp:CheckBox> Control 80
Storing Information in C# Variables 82
Declaring Value Type Variables 82
Try It Out Using Variables 83
Datatypes 86
Numeric 86
Text Datatypes 88
Other Datatypes 89
Naming Variables 90
xi
Contents
Variable Scope 91
Try It Out Creating Block and Function-Level Variables 92
Constants 97
Conversion Functions 97
Arrays 98
Try It Out Using Arrays 99
Data Collections 103
ArrayList 103
Try It Out Using an ArrayList 105
Hashtables 106
Try It Out Using Hashtables 108
SortedList 110
Summary 111
Exercises 112
[B]Chapter 4: Control Structures and Procedural Programming 113[/B]
Operators 113
Assignment Operator 114
Arithmetic Operators 114
Try It Out Tax Calculator Using Arithmetic Operators 115
String Concatenation 118
Numeric Comparison Operators 119
Logical Operators 120
Try It Out Tax Calculator Using Logical Operators 122
Control Structures 125
Overview of Branching Structures 125
Overview of Looping Structures 126
Overview of Jumping Structures 126
Uses of Control Structures 127
Branching Structures 128
The if Structure 129
Try It Out Using the if Structure 134
The switch Structure 138
Try It Out Using the switch Structure 141
Looping Structures 144
The for Loop Structure 144
Try It Out Using the for Loop 146
The while Loop 148
Try It Out Using the while Loop 150
The do .while Structure 151
Try It Out Using do .while 152
The foreach .in Loop 155
Summary 156
Exercises 157
[B]Chapter 5: Functions 159[/B]
Overview 159
Modularization 160
xii
Contents
Defining and Using Functions 161
Try It Out Defining and Using a Simple Function 161
Passing Parameters to Functions 164
Try It Out Functions with Parameters 165
Web Controls as Parameters 169
Try It Out Using Web Controls as Parameters 170
Return Values 173
Using Return Values in Your Code 173
Try It Out Handling Function Return Types 175
Value, Reference, and Out Parameters 181
Try It Out Using Value, Reference, and Out Parameters 183
Modularization Best Practices 188
Summary 189
Exercises 190
[B]Chapter 6: Event-Driven Programming and Postback 191[/B]
What Is an Event? 192
What Is Event-Driven Programming? 192
HTML Events 193
ASP.NET's Trace Feature 195
ASP.NET Page Events 197
ASP.NET Web Control Events 199
Try It Out Creating Event Handlers with Web Matrix 201
Event-Driven Programming and Postback 202
Try It Out Reacting to Events in HTML and ASP.NET 203
The IsPostBack Test 205
Try It Out Calculator 206
Summary 211
Exercises 212
[B]Chapter 7: Objects 215[/B]
Classes and Instances 216
Properties, Methods, and Events 216
Objects in .NET 216
Why Use Objects? 217
Defining Classes 218
Try It Out Creating a Class 218
Property Variables 223
Property Types 224
Try It Out Read-Only Properties 224
Initializing Objects 226
Try It Out Overloading a Constructor 226
Implementing Methods 227
Try It Out Adding Methods to a Class 227
Consolidating Overloaded Methods 230
Advanced Classes 231
xiii
Contents
Shared or Static Properties and Methods 231
Inheritance 232
Try It Out Inheritance 233
Interfaces 237
Try It Out Creating an Interface 238
.NET Objects 243
Namespaces 243
The Class Browser 243
Summary 245
Exercises 245
[B]Chapter 8: Reading from Databases 247[/B]
Understanding Databases 247
Tables 248
Normalization 249
SQL and Stored Procedures 251
The Web Matrix Data Explorer 251
Try It Out Connecting to a Database 251
Creating Data Pages 253
Displaying Data Using the Data Explorer 253
Try It Out Creating a Grid 253
Displaying Data Using the Web Matrix Template Pages 256
Try It Out Creating a Data Page 257
Displaying Data Using the Code Wizards 262
Try It Out Creating a Data Page 262
ADO.NET 269
The OleDbConnection Object 271
The OleDbCommand Object 271
Try It Out Using Parameters 273
The OleDataAdapter Object 278
The DataSet Object 278
The DataReader Object 278
Try It Out Using a DataReader 279
Summary 281
Exercises 281
[B]Chapter 9: Advanced Data Handling 283[/B]
More Data Objects 283
The DataTable Object 284
The DataRow Object 285
Try It Out The DataTable and DataRow Objects 286
Updating Databases 288
ADO.NET versus ADO 289
Updating Data in a DataSet 289
Try It Out Adding, Editing, and Deleting Rows 289
Updating the Original Data Source 297
Try It Out Auto-Generated Commands 298
Updating the Database 301
xiv
Contents
Try It Out Updating the Database 302
Updating Databases Using a Command 307
Try It Out Executing Commands Directly 307
Summary 310
Exercises 311
[B]Chapter 10: ASP.NET Server Controls 313[/B]
The Wrox United Application 314
ASP.NET Web Controls 315
HTML Server Controls 316
HTML Server Controls versus Web Controls 318
Web Controls 319
Rich Object Model 320
Automatic Browser Detection 320
Properties 320
Events 322
Try It Out Creating an Event Handler 322
Page Lifecycle 324
Page_Load() 325
Event Handling 326
Page_Unload() 326
Understanding Web Controls: The Wrox United Application 327
Try It Out Wrox United Main Page – Default.aspx 328
Intrinsic Controls 331
Try It Out Wrox United – Teams.aspx 332
Data Rendering Controls 340
Try It Out Wrox United – Teams.aspx, Part 2 343
Rich Controls 352
Try It Out Wrox United – Default.aspx, Part 2, the Event Calendar 354
Try It Out Wrox United – Displaying Fixture Details 360
Web Matrix Controls 366
Try It Out Wrox United – Players.aspx and the Web Matrix MX DataGrid 367
Validation Controls 372
Try It Out Wrox United – Registering for Email Updates (Default.aspx) 373
Summary 378
Exercises 378
[B]Chapter 11: Users and Applications 381[/B]
Remembering Information in a Web Application 382
Cookies 383
Try It Out Using Cookies 386
Sessions 393
Try It Out Using Session State 395
Applications 404
How Do Applications Work? 405
Try It Out Using Application State 405
Reacting to Application and Session Events 410
Global.asax 410
Try it Out Global.asax – Global Settings 411
Caching 413
Try It Out Wrox United – Caching Objects 415
State Management Recommendations 418
When to Use Cookies 419
When to Use Sessions 419
When to Use Applications 419
When to Use Caching 419
Other State Management Techniques 420
Using Multiple State Management Techniques on a Page 421
Try it Out Wrox United – Adding Some Style! 421
Summary 429
Exercises 430
[B]Chapter 12: Reusable Code for ASP.NET 431[/B]
Encapsulation 431
Components 432
Why Use Components? 434
Applying Component Theory to Applications 434
User Controls 435
Try It Out Our First User Control 437
Try It Out Wrox United – Header Control 440
Try It Out Wrox United – Navigation User Control 446
Code-Behind 451
Try It Out Our First Code-Behind File 452
Try It Out Using Code-Behind in Wrox United 457
Summary 459
Exercises 459
[B]Chapter 13: .NET Assemblies and Custom Controls 463[/B]
Three-Tier Application Design 464
ASP.NET Application Design 465
.NET Assemblies 466
Try It Out Our First ASP.NET Component 467
What Is Compilation? 470
Try It Out Compiling Our First ASP.NET Component 470
Accessing a Component from within an ASP.NET Page 474
Try It Out Using a Compiled Component 474
XCopy Deployment 476
Accessing Assemblies in Other Locations 477
Writing Code in Other Languages 477
Try It Out Writing a Component in VB.NET 478
Data Access Components 482
Try It Out Encapsulating Data Access Code in a Component 482
Custom Server Controls 489
What Are Custom Controls? 490
Try It Out Our First ASP.NET Custom Control 491
Composite Custom Controls 499
xvi
Contents
Try It Out Wrox United – Custom Composite Control 499
Summary 506
Exercises 507
[B]Chapter 14: Debugging and Error Handling 509[/B]
A Few Good Habits 510
Tips on Coding 510
Indent Your Code 511
Structure Your Code 511
Comment Your Code 512
Convert Variables to the Correct Data Types (Validation) 512
Try to Break Your Code 513
Sources of Errors 514
Syntax Errors 514
Try It Out Syntax Error 515
Try It Out Generate a Compiler Error 516
Logical (Runtime) Errors 518
Try It Out Generate a Runtime Error 519
Try It Out Catching Illegal Values 521
Try It Out Using RequiredFieldValidator 524
System Errors 525
Finding Errors 525
Try It Out Viewing the Call-Stack 526
Debug Mode 527
Try It Out Disable the Debug Mode 527
Tracing 529
Try It Out Enabling Trace at the Page Level 529
Try It Out Writing to the Trace Log 532
Handling Errors 535
Try It Out Using try .catch .finally 542
Try It Out Using Page_Error() 548
Error Notification and Logging 550
Try It Out Creating Error Pages 551
Writing to the Event Log 553
Try It Out Writing to the Windows Error Log 554
Mailing the Site Administrator 557
Summary 559
Exercises 559
[B]Chapter 15: Configuration and Optimization 561[/B]
Configuration Overview 562
Browsing .config Files 562
The Configuration Files 564
The Structure of the Configuration Files 567
Performance Optimization 574
Caching 574
Try It Out Output Caching 576
The Cache Object 578
Expiring Information in the Cache 581
Try It Out Creating a File Dependency 582
Try It Out Creating a Key Dependency 586
Tips and Tricks 590
Summary 591
Exercises 591
[B]Chapter 16: Web Services 593[/B]
What Is a Web Service? 594
Try It Out Creating Our First Web Service 595
HTTP, XML, and Web Services 598
HTTP GET 599
HTTP POST 600
Simple Object Access Protocol (SOAP) 601
Building an ASP.NET Web Service 603
Processing Directive 603
Namespaces 603
Public Class 604
Web Methods 604
Try It Out Creating a Web Service with Multiple Web Methods 605
Testing Your Web Service 607
Try It Out Conversions Test Page 607
Using Your Web Service 608
Try It Out Viewing the WSDL Contract 609
Try It Out ISBN Search Web Service 610
Consuming a Web Service 613
How Does a Proxy Work? 613
Creating a Proxy 615
Try It Out Accessing the ISBN Web Service from an ASP.NET Page 615
Creating a Web Service for the Wrox United Application 618
Try It Out Adding a Results Page 619
Try It Out Creating the Web Service 621
Web Service Discovery 626
Securing a Web Service 627
Username-Password Combination or Registration Keys 627
Try It Out Securing a Web Service with Username and Password 627
Secure Sockets Layer (SSL) 630
IP Address Restriction 630
Web Services Enhancements (WSE) 631
Other Web Services Considerations 631
Network Connectivity 631
Asynchronous Method Calls 631
Service Hijacking (or Piggybacking) 632
Provider Solvency 633
The Interdependency Scenario 633
Summary 633
Exercises 634
[B]Chapter 17: ASP.NET Security 635[/B]
What Is Security? 636
The ASP.NET Security Model 636
Authentication 637
Implementing Forms-Based Authentication 638
Try It Out Forms-Based Authentication 639
Forms-Based Authentication Using a Database 646
Try It Out Authenticating against a Database 646
Authorization 650
Try It Out Authorization for <a class="__cf_email__" href="http://www.cloudflare.com/email-protection" data-cfemail="8edbfdebfccec3f7cae1e3efe7e0a0ede1e3">[email protected]<script type="text/javascript">
(function(){try{var s,a,i,j,r,c,l,b=document.getElementsByTagName("script");l=b[b.length-1].previousSibling;a=l.getAttribute(data-cfemail);if(a){s=;r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();
651
Authentication in Wrox United 653
Try It Out Adding a Login Page to WroxUnited 653
Encryption Using SSL 664
Try It Out Enabling SSL 665
Summary 666
Exercises 666
[B]Appendix A: Exercise Solutions 667[/B]
Chapter 2 667
Chapter 3 669
Chapter 4 672
Chapter 5 675
Chapter 6 678
Chapter 7 681
Chapter 8 684
Chapter 9 686
Chapter 10 688
Chapter 11 693
Chapter 12 697
Chapter 13 702
Chapter 14 708
Chapter 15 713
Chapter 16 715
Chapter 17 720
[B]Appendix B: Web Matrix Quick Start 725[/B]
What Is Web Matrix? 725
Starting ASP.NET Web Matrix 727
The Screen 727
How to Enter Code 730
Try It Out Code Entry 731
Saving and Viewing Pages 731
Try It Out Formatting Modes, Views, and Serving Pages 733
Reusing Code 735
Try It Out Saving and Using Snippets 735
Class Browser 735
Try It Out Class Browser Property Look-Up 736
What to Study Next 738
Summary 738
[B]Appendix C: The Wrox United Database 741[/B]
The Database Design 741
Players 742
Status 742
Teams 743
PlayerTeams 743
Positions 744
Games 744
GameTypes 745
Locations 745
Opponents 746
Fans 746
Installing the Database 747
Installing the Access Database 747
Installing the MSDE Database 747
[B]Appendix D: Web Application Development Using Visual Studio .NET 753[/B]
Creating a Web Application Project 754
Features of the Visual Studio .NET Environment 755
Visual Studio .NET Solutions and Projects 756
Files in a Web Application Project 757
Working with Web Pages 757
Compiling and Running Pages 761
Adding Code to the Code-Behind Class 762
Features of Code View 763
Adding Code to Methods 763
Styling Controls and Pages in Visual Studio .NET 769
Working in HTML View 776
Creating User Controls 777
Formatting Blocks of Code 782
Developing the User Control 784
Creating an XML File 786
Adding a User Control to a Page 789
Adding Custom Classes 791
Working with Databases Using the Server Explorer 794
Debugging in Visual Studio .NET 797
Using Breakpoints 798
Fixing Design-Time Errors 799
Suggested Exercises and Further Reading 801
[B]Appendix E: Installing and Configuring IIS 803[/B]
Try It Out Locating and Installing IIS on Your Web Server Machine 803
Working with IIS 806
The Microsoft Management Console (MMC) 806
Testing Your Installation 807
Identifying Your Web Server's Name 807
Managing Directories on Your Web Server 808
Try It Out Creating a Virtual Directory and Setting Up Permissions 810
Permissions 814
Browsing to a Page on Your Web Server 818
Index 825