Asp.Net Web Developer Guide

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
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
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
Basic Web Controls 101
Using Labels, TextBoxes, RadioButtons,
CheckBoxes, and DropDownLists 103
Using the ListControl Abstract Class 106
Using HyperLink Controls 110
Binding a ListControl to an ArrayList 111
Validation Controls 113
The RequiredFieldValidator Control 114
The RegularExpressionValidator Control 115
The CompareValidator Control 117
The RangeValidator Control 118
The CustomValidator Control 118
CustomValidator with Explicit
Client-Side Validation Function 120
Displaying the Error Message with Style 122
The ValidationSummary Control 123
Validating Patterned Strings, Passwords,
and Dates 126
The Databound ListControls Family 130
Using the Repeater Server Control 132
Using the DataList Control 139
Using the DataGrid Control 144
Providing Paging in DataGrid 152
Navigating to a Selected Page 154
Providing Data Editing Capability in
a DataGrid Control 157
Creating Custom ASP Server User Controls 161
Creating a Simple Web User Control 161
Exposing Properties of a User Control 163
Developing the Payroll User Control 164
Consuming the Payroll User Control 166
Summary 168
Solutions Fast Track 168
Frequently Asked Questions 171
Chapter 4 Configuring ASP.NET 173
Introduction 174
Overview of ASP.NET Configuration 174
Uses for a Configuration File 177
Application Configuration 179
Setting Static Variables Using the
Tag 179
Providing Global Support Using the
globalization Tag 180
Configuring Application Identity
Using the identity Tag 181
Setting Page-Specific Attributes
Using the pages Tag 181
Configuring the Tracing
Service Using the trace Tag 183
System Configuration 184
Determining Client Capabilities
Using the browserCaps Tag 184
Setting Compilation Options
Using the compilation Tag 187
Controlling Connections Using the
connectionManagement Tag 190
Defining Custom Errors
Using the customErrors Tag 191
Mapping Requests Using the
httpHandlers Tag 192
Configuring HTTP Modules
Using the httpModules Tag 193
Setting Runtime Options
Using the httpRuntime Tag 194
Setting Process Model Options
Using the processModel Tag 195
Configuring the Session State
Using the sessionState Tag 200
Configuring Request Modules Using
the webRequestModule Tag 202
Configuring Web Services
Using the webServices Tag 203
Security 204
Authenticating Users Using the
authentication Tag 205
Configuring Security Modules Using
the authenticationModules Tag 207
Controlling Access Using the
authorization Tag 208
Configuring Encryption Keys
Using the machineKey Tag 209
Mapping Security Policies
Using the securityPolicy Tag 210
Applying Trust Levels Using the
trust Tag 211
Anatomy of a Configuration File 211
Creating a Configuration File 215
Retrieving Settings 220
Summary 223
Solutions Fast Track 223
Frequently Asked Questions 224
Chapter 5 An ASP.NET Application 227
Introduction 228
Understanding ASP.NET Applications 228
Managing State 229
Analzying Global.asax 231
Understanding Application State 232
Using Application State 232
Application Cache Object 233
Static Variables 234
State Example 234
Using Application Events 236
Supported Application Events 236
More Events 237
Working with Application Events 238
Threading Use 239
Understanding Session State 240
Configuring Sessions 241
Using Session Events 243
Working with Session Events 245
Comparing Application and Session States 246
Static Values 249
Caching Data 252
Expiring the Cache 258
Summary 259
Solutions Fast Track 259
Frequently Asked Questions 262
Chapter 6 Optimizing Caching Methods 265
Introduction 266
Caching Overview 266
Output Caching 269
Using the @ OutputCache Directive 269
Using the HttpCachePolicy Class 275
Advantages of Using Output Caching 276
Fragment Caching 277
Advantages of Using Fragment Caching 281
Data Caching 281
Using the Cache Method 282
Using the cache.add and cache.insert
Methods 285
Using the Dependency Option 285
Using the Expiration Policy Option 287
Using the Priority Options 288
Using the CacheItemRemovedCallback
Delegate 289
Using the Cache.Remove
Method 292
Advantages of Using Data Caching 292
Best Uses for Caching 293
Output Caching 294
Fragment Caching 294
Data Caching 294
Summary 295
Solutions Fast Track 296
Frequently Asked Questions 297
Chapter 7 Introduction to ADO.NET:
A Simple Address Book 299
Introduction 300
Understanding the Changes in ADO.NET 300
Supported Connectivity 305
The System.Data Namespace 305
The System.Data.Common Namespace 307
The System.Data.OleDb Namespace 307
The System.Data.SqlClient Namespace 308
The System.Data.SqlTypes Namespace 308
Creating Connection Strings 310
Where to Put the Connection String 312
Creating an Address Book Application 314
Connecting to a Database: Exercise 319
Browsing a Database: Exercise 323
Adding to a Database: Exercise 330
Updating Data in a Database: Exercise 335
Deleting from a Database: Exercise 339
Summary 342
Solutions Fast Track 343
Frequently Asked Questions 345
Frequently Asked Questions 345
Chapter 8 Using XML in the
.NET Framework 347
Introduction 348
An Overview of XML 348
What Does an XML Document Look Like? 349
Creating an XML Document 350
Creating an XML Document
in VS.NET XML Designer 351
Components of an XML Document 352
Well-Formed XML Documents 355
Schema and Valid XML Documents 356
Structure of an XML Document 360
Processing XML Documents Using .NET 361
Reading and Writing XML Documents 362
Storing and Processing XML Documents 363
Reading and Parsing Using the
XmlTextReader Class 364
Parsing an XML Document: 365
Navigating through an XML Document
to Retrieve Data 367
Writing an XML Document Using the
XmlTextWriter Class 370
Generating an XML Document Using
XmlTextWriter 370
Exploring the XML Document Object Model 373
Navigating through an XmlDocument
Object 374
Parsing an XML Document Using the
XmlDocumentObject 376
Using the XmlDataDocument Class 378
Loading an XmlDocument and
Retrieving the Values of Certain Nodes 379
Using the Relational View of
an XmlDataDocument Object 381
Viewing Multiple Tables of
a XmlDataDocument Object 383
Querying XML Data Using XPathDocument
and XPathNavigator 388
Using XPathDocument and
XPathNavigator Objects 390
Using XPathDocument and XPathNavigator
Objects for Document Navigation 392
Transforming an XML Document Using XSLT 396
Transforming an XML Document
to an HTML Document 397
Transforming an XML Document
into Another XML Document 400
Working with XML and Databases 405
Creating an XML Document
from a Database Query 406
Reading an XML Document into a DataSet 408
Summary 410
Solutions Fast Track 410
Frequently Asked Questions 414
Chapter 9 Debugging ASP.NET 417
Introduction 418
Handling Errors 418
Syntax Errors 419
Compilation Errors 419
Runtime Errors 420
Unstructured Error Handling 421
Structured Error Handling 423
Logic Errors 426
Page Tracing 426
Using the TraceClass 427
Sorting the Trace Information 430
Writing the Trace Information to the
Application Log 432
Application Tracing 432
Using Visual Studio .NET Debugging Tools 434
Setting Breakpoints 434
Enabling and Disabling Debug Mode 435
Viewing Definitions Using the Object
Browser 436
Using the Class Viewer 436
Summary 438
Solutions Fast Track 438
Frequently Asked Questions 439
Chapter 10 Web Services 441
Introduction 442
Understanding Web Services 443
Communication between Servers 448
.asmx Files 450
WSDL 455
Using XML in Web Services 460
An Overview of the System.Web.Services
Namespace 461
The System.Web.Services.Description
Namespace 461
The System.Web.Services.Discovery
Namespace 461
The System.Web.Services.Protocols
Namespace 462
Type Marshalling 464
Using DataSets 466
Summary 469
Solutions Fast Track 469
Frequently Asked Questions 471
Chapter 11 Creating an XML.NET
Guestbook 473
Introduction 474
Functional Design Requirements of the XML
Guestbook 475
Constructing the XML 476
Adding Records to the Guestbook 478
Understanding the pnlAdd Panel 482
Adding a Thank-You Panel with PnlThank 484
Exploring the Submit Button Handler Code 484
Viewing the Guestbook 488
Displaying Messages 488
Advanced Options for the Guestbook Interface 490
Manipulating Colors and Images 491
Modifying the Page Output 495
Summary 498
Solutions Fast Track 498
Frequently Asked Questions 500
Chapter 12 Creating an ADO.NET
Shopping Cart 501
Introduction 502
Setting Up the Database 502
Setting Up the Table “Books” 505
Setting Up the Table “Categories” 505
Setting Up the Table “Customer” 505
Setting Up the Table “Orders” 505
Setting Up the Table “BookOrders” 506
Creating an Access Database 506
SQL Server Database 510
Creating the Stored Procedures 512
Creating the Web Services 518
Overview of the Book Shop Web Services 518
Creating the Data Connection 520
Creating a Web Service 521
Testing a Web Service 527
Using WSDL Web References 531
Building the Site 533
Site Administration 533
Creating the Administration Login
(adminLogin.aspx) 535
Creating the Administrator Page
(adminPage.aspx) 537
Retrieving the Data: Creating the
getBooks.AllBooksWeb Method 537
Displaying the Data: Binding a
DataGrid to the DataSet 540
Adding New Books to the Database:
Creating the allBooks.addItem Web
Method 541
Deleting Books: Deleting from
the DataGrid and the Database 541
Updating Book Details: Updating
the DataGrid and the Database 542
Creating the addBook Page (addBook.aspx) 543
Customer Administration 543
Creating the Customer Admin Section 543
Creating the loginCustomer Page 544
Creating the updateCustomerInfo Page 545
Creating an ADOCatalog 547
Creating the BookCatalog Class 548
Creating the CreateSummaryTable
Method 549
Creating the InitCatalog Method 550
Creating the Catalog Method 550
Creating the catalogItemDetails,
catalogRange, and catalogByCategory
Methods 550
Creating the catalogRangeByCategory
Method 551
Building an XMLCart 553
Creating the User Interface 556
Creating the start.aspx Page 556
Rendering the Catalog 558
Rendering the Cart 559
Creating the Code 559
Summary 562
Solutions Fast Track 562
Frequently Asked Questions 566
Chapter 13 Creating a Message
Board with ADO and XML 567
Introduction 568
Setting Up the Database 568
MSAccess Database 569
SQL Server Database 572
Designing Your Application 576
Designing Your Objects 579
Creating Your Data Access Object 579
Designing the UserClass 581
Designing the BoardClass 591
Designing the ThreadList Class 599
Designing the Thread class 603
Designing the PostList Class 606
Designing the PostClass 608
Designing the MessageBoard Class 611
Designing the User Interface 612
Setting Up General Functions 614
Building the Log-In Interface 621
Designing the Browsing Interface 628
Board Browsing 628
Thread Browsing 631
Message Browsing 635
Creating the User Functions 638
Editing the Member Profile 638
Creating Threads and Posts 641
Building the Administrative Interface 645
Summary 658
Solutions Fast Track 658
Frequently Asked Questions 661
Index 663

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