Visual Basic.NET Tips and Techniques

By: Kris Jamsa

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Paperback | 29 May 2002

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708 Pages

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23.5 x 19.1 x 3.5

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Bestselling and highly acclaimed Visual Basic author Kris Jamsa delivers the ultimate VB.NET resource. Organized by topic and packed with critical information, this book effectively explains complex concepts with precision. Filled with proven techniques and hundreds of solutions that can be put to immediate use easily and effectively, this is a must-have guide for every Visual Basic developer and programmer working with Web services and applications on the .NET platform.

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Non-Fiction Computing & I.T.Computer Programming & Software Development Programming & Scripting Languages Computer Hardware Personal Computers

Acknowledgments	p. xvii
Introduction	p. xix
Laying Your Visual Basic .NET Foundation	p. 1
Creating Your First Console Application	p. 2
Building a Windows-Based Application	p. 4
Choosing the Correct Visual Basic Types	p. 6
Declaring Variables in a Visual Basic .NET Program	p. 7
Displaying Screen Output Using Console.Write and Console.WriteLine	p. 9
Formatting Program Output Using Console.WriteLine	p. 11
Concatenating Characters to the End of a String	p. 13
Forcing Programs to Specify a Variable's Type	p. 15
Beware of Variable Overflow and Precision	p. 17
Performing Numeric Operations	p. 19
Casting a Value of One Variable Type to Another	p. 22
Making Decisions Using Conditional Operators	p. 24
Taking a Closer Look at the Visual Basic .NET Relational and Logical Operators	p. 27
Handling Multiple Conditions Using Select	p. 29
Repeating a Series of Instructions	p. 31
Avoiding Infinite Loops	p. 34
Executing a Loop Prematurely	p. 34
Visual Basic .NET Supports Lazy Evaluation to Improve Performance	p. 35
Wrapping Long Statements	p. 36
Taking Advantage of the Visual Basic Assignment Operators	p. 37
Commenting Your Program Code	p. 38
Reading Keyboard Input Using Console.Read and Console.ReadLine	p. 39
Displaying a Message in a Message Box	p. 40
Prompting the User for Input Using an Input Box	p. 41
Breaking a Programming Task into Manageable Pieces	p. 43
Passing Parameters to a Function or Subroutine	p. 47
Declaring Local Variables in a Function or Subroutine	p. 49
Changing a Parameter's Value in a Subroutine	p. 51
Using Scope to Understand the Locations in a Program Where a Variable Has Meaning	p. 52
Storing Multiple Values of the Same Type in a Single Variable	p. 55
Grouping Values in a Structure	p. 58
Improving Your Code's Readability Using Constants	p. 60
Summarizing the Differences Between Visual Basic and Visual Basic .NET	p. 62
Exploiting the .NET Environment	p. 64
Taking Advantage of the Common Language Runtime	p. 65
Declaring Variables Based on Common Types	p. 67
Migrating to ASP.NET	p. 70
Exploiting Windows Forms	p. 74
Making Sense of Metadata	p. 76
Organizing Object Libraries Using Namespaces	p. 79
Taking Advantage of Intermediate Language Code	p. 82
Packaging .NET Solutions into Assemblies	p. 84
Leveraging Managed Memory and Garbage Collection	p. 86
Making Sense of .NET Versioning	p. 89
Standardizing Error Handling	p. 90
Programming Visual Basic .NET Classes	p. 92
Using Scope Attributes to Restrict Access to Class Members	p. 97
Initializing Class Member Variables	p. 100
Defining Multiple Constructors to Support Different Parameters	p. 102
Simplifying Object Member References	p. 105
Taking Advantage of Static Class Members	p. 107
Taking Advantage of Properties to Control Values a Class Member Can Store	p. 109
Avoiding Parameter Name and Class Member Variable Name Conflicts	p. 112
Performing "Cleanup" Processing Using a Destructor Method	p. 112
Mapping a Class Object to a Visual Basic .NET Form	p. 114
Taking a Closer Look at .NET Garbage Collection	p. 115
Forcing the Garbage Collector to Collect Unused Memory	p. 117
Providing Destructor-like Support for Dispose Operations	p. 119
Taking a Closer Look at Visual Basic .NET Forms	p. 120
Taking a Closer Look at a Class Using the Visual Studio Class View	p. 123
Sharing a Class Member Variable Among Class Instances	p. 124
Inserting a Class Template Using Visual Studio	p. 125
Researching Classes Using the Visual Studio Object Browser	p. 127
Object-Oriented Programming in Visual Basic .NET	p. 128
Keeping Track of Constructor Methods	p. 129
Passing Parameters to the Base-Class Constructor	p. 131
Taking a Close Look at Inheritance and Destructor Methods	p. 134
Method Overloading and Inheritance	p. 137
Method Overriding and Inheritance	p. 140
Shadowing a Base-Class Method	p. 144
Forcing a Specific Method's Invocation Using MyClass	p. 146
Preventing Class Inheritance	p. 148
Implementing Polymorphic Objects that Change Form as Your Program Executes	p. 149
Taking a Sneak Preview at Inheritance and Events	p. 151
Restricting a Class for Use Only as a Base Class	p. 152
Forcing a Derived Class to Override a Base-Class Method	p. 152
Multiple Levels of Inheritance Differs from Multiple Inheritance	p. 156
Creating an Interface	p. 158
Implementing Multiple Interfaces Within a Class	p. 162
Inheriting a Class that Implements an Interface	p. 163
Test Driving the Common Language Runtime and Base Class Library	p. 166
Retrieving the Current System Date and Time	p. 167
Taking a Closer Look at the DateTime Class	p. 169
Taking a Closer Look at the String Class	p. 172
Improving Performance Using a StringBuilder Object	p. 176
Exploiting the Math Class	p. 179
Sending E-mail Messages from Within a Visual Basic .NET Program	p. 181
Programming Visual Basic .NET File and Directory Operations	p. 184
Getting Started with the Directory Class	p. 185
Retrieving and Manipulating Directory Attributes	p. 190
Creating a Unique Directory	p. 193
Retrieving a Directory's Files and Subdirectories	p. 194
Determining a System's Logical Disk Drives	p. 196
Retrieving a Directory's Files and Subdirectories Using the DirectoryInfo Class	p. 197
Retrieving a Directory's Parent or Root Directory	p. 198
Manipulating a Directory Path	p. 200
Performing Common File Operations	p. 204
Taking Advantage of File Attributes	p. 207
Starting with File Streams	p. 213
Taking a Closer Look at the StreamWriter and StreamReader Classes	p. 217
Reading and Writing Binary Data	p. 221
Getting Started with File Locks	p. 225
Responding to FileWatcher Events	p. 227
Leveraging the .NET Common Dialogs	p. 230
Prompting the User for a File to Open	p. 232
Fine-Tuning OpenFileDialog Operations	p. 235
Saving Information in a User-Specified File	p. 239
Fine-Tuning File Save Operations	p. 241
Selecting Font Attributes	p. 244
Putting a User's Font Selections to Use	p. 247
Selecting a Color	p. 248
Fine-Tuning Color Dialog Box Operations	p. 250
Using the PrintDialog Class to Prompt the User for Printing Options	p. 252
Determining Available Printers	p. 255
Using the PageSetupDialog Class to Prompt the User for Page Settings	p. 256
Performing Print Operations	p. 260
Exploiting Multiple Threads of Execution	p. 264
Creating and Running Multiple Threads	p. 267
Putting a Thread to Sleep	p. 270
Suspending, Resuming, and Aborting a Thread	p. 272
Taking a Closer Look at the Thread Class	p. 275
Assigning Thread Names	p. 277
Suspending One Thread's Execution Until a Specific Thread Completes Its Processing	p. 280
Controlling Thread Priorities	p. 283
Taking Advantage of the Thread Pool	p. 286
Recognizing Potential Race Conditions Between Threads	p. 288
Using SyncLock to Protect a Shared Resource	p. 292
Synchronizing Thread Resource Access Using the Monitor Class	p. 294
Preventing Thread Blocking with Monitor.TryEnter	p. 298
Protecting Shared Variable Increment and Decrement Operations Using InterLocked	p. 300
Taking a Closer Look at the Process Class	p. 301
Launching a Program Using the Process Class	p. 306
Terminating a Process	p. 310
Preventing Two Copies of the Same Program from Executing at the Same Time	p. 312
Displaying Information About Each Process in Your System	p. 313
Displaying Information About a Process's Threads	p. 314
Taking Advantage of Structured Error Handling	p. 318
Catching a Specific Exception	p. 324
Testing for Different Exceptions	p. 327
Handling Exceptions Using a Generic Catch Statement	p. 328
Performing "Cleanup" Processing After an Exception Occurs	p. 330
Taking a Closer Look at the System.Exception Class	p. 333
Creating Your Own Custom Exceptions	p. 335
Testing Your Exception Handling by Throwing an Exception	p. 336
Chasing Down the Code Location that Caused an Exception	p. 339
Taking a Closer Look at the Debug Class	p. 341
Determining If the Debugger Is Active	p. 346
Using Debug Class Assertions to Locate Program Errors	p. 347
Using Event Logs to Track Program Operations	p. 348
Responding to and Handling Events	p. 354
Defining and Raising an Event in a Class	p. 355
Handling an Event Using the Handles Clause	p. 358
Specifying an Event Handler Using AddHandler	p. 361
Calling Multiple Handlers for an Event	p. 363
Adding and Removing Event Handlers	p. 365
Taking Advantage of Events and Class Inheritance	p. 366
Using a .NET Delegate to Point to a Function	p. 367
Taking Advantage of a Delegate in a Subroutine Call	p. 370
Sorting Data Using Delegates	p. 373
Assigning Multiple Methods to a Delegate	p. 377
Viewing a Delegate's Invocation List	p. 378
Responding to Timer Events	p. 379
Taking a Closer Look at the EventArgs Class	p. 381
Programming Windows Forms	p. 384
Programming the Form Control	p. 388
Programming the Button Control	p. 390
Programming the Label Control	p. 392
Adding Images to a Form's Label	p. 395
Programming the LinkLabel Class	p. 396
Programming Menu Controls	p. 398
Programming the PictureBox Control	p. 399
Programming the NumericUpDown Control	p. 402
Programming the ComboBox Control	p. 404
Displaying an Operation's Status Using a ProgressBar and the StatusBar	p. 405
Programming the TextBox Control	p. 407
Programming the RichTextBox Control	p. 409
Programming ScrollBar Controls	p. 411
Programming the TrackBar Control	p. 412
Programming the ToolBar Control	p. 414
Programming the RadioButton Control	p. 416
Using a GroupBox to Group Radio Buttons	p. 417
Programming the CheckBox Control	p. 419
Programming the DomainUpDown Control	p. 421
Programming the ListBox Control	p. 422
Programming the CheckedListBox Control	p. 424
Programming the DateTimePicker Control	p. 425
Programming the MonthCalendar Control	p. 427
Programming a Tab Control	p. 428
Using a Panel Control to Group Controls	p. 430
Programming the TreeView Control	p. 431
Programming the ListView Control	p. 433
Looking Closer at .NET Assemblies and Versioning	p. 436
Revisiting .NET Assemblies	p. 437
Creating a Class Library	p. 439
Leveraging a Class Library's Programming-Language Independence	p. 441
Taking a Closer Look at a Shared Assembly's Public Key	p. 443
Installing a Shared Assembly into the Global Assembly Cache	p. 444
Exploiting .NET Versioning	p. 444
Precompiling a Shared Assembly to Reduce Load Time	p. 446
Using the @Assembly Directive in an ASP.NET Page	p. 447
Taking Advantage of the Microsoft .NET Framework Configuration	p. 449
Viewing an Application's Assembly Specifics	p. 451
Programming ASP.NET Solutions	p. 454
Creating and Running a Simple ASP.NET Page	p. 456
Implementing a Simple ASP.NET Page Using C# and Visual Basic .NET	p. 458
Creating and Running an ASP.NET Project in Visual Studio	p. 460
Coding Changes You Must Make as You Migrate from ASP to ASP.NET	p. 463
Taking Advantage of Cookies in an ASP.NET Page	p. 465
Determining a Browser's Capabilities	p. 467
Maintaining ASP and ASP.NET Pages Side by Side	p. 469
ASP and ASP.NET Cannot Share Application and Session Objects	p. 471
Viewing HTTP Header Information	p. 476
Taking Advantage of Key ASP.NET Page-Based Methods	p. 479
ASP and ASP.NET Treat Form.Request and Form.QueryString Differently	p. 480
Handling Exceptions in ASP.NET Pages	p. 484
Taking Advantage of ASP.NET Configuration Files	p. 488
Implementing a Custom-Error Page	p. 489
Improving Performance by Disabling Debug Operations	p. 490
Specifying Application- and Session-Specific Processing	p. 492
Taking a Closer Look at the Page Directive	p. 492
Fine-Tuning ASP.NET Cache Attributes	p. 494
Importing a Namespace Using the Imports Directive	p. 495
Programming Windows Services	p. 500
Building a Simple Windows Service	p. 502
Installing and Removing a Service in Windows 2000	p. 509
Taking a Closer Look at the ServiceBase Class	p. 511
Writing Service Events to the Windows Event Log	p. 514
Directing a Service to Perform Operations at Specific Time Intervals	p. 516
Taking Advantage of Threads to Process Service Operations	p. 519
Notifying the Administrator of Critical System Events	p. 522
Integrating a FileSystemWatcher into a Web Service	p. 526
Programming Web Forms	p. 530
Programming the asp:Button Control	p. 533
Programming the asp:Checkbox Control	p. 536
Programming the asp:CheckboxList Controls	p. 539
Programming the asp:RadioButton Control	p. 541
Programming the asp:Hyperlink Control	p. 543
Programming the asp:Image Control	p. 545
Programming the asp:ImageButton Control	p. 548
Programming the asp:Label Control	p. 550
Programming the asp:TextBox Control	p. 552
Programming the asp:Panel Control	p. 555
Programming the asp:DropDownList Control	p. 557
Programming the asp:ListBox	p. 559
Programming the asp:RadioButtonList Control	p. 561
Programming the asp:Literal Control	p. 563
Programming the asp:PlaceHolder Control	p. 564
Programming the asp:Calendar Control	p. 566
Programming the asp:Rotator Control	p. 567
Programming the asp:XML Control	p. 569
Programming the asp:RequiredFieldValidator Control	p. 570
Programming the asp:RangeValidator Control	p. 573
Programming the asp:CompareValidator Control	p. 576
Programming the asp:CustomValidator Control	p. 578
Programming the asp:RegularExpressionValidator Control	p. 580
Taking Advantage of HTML Server Controls	p. 582
Programming Web Services	p. 586
Creating Your First Web Service	p. 588
Creating a Simple Date/Time Web Service	p. 593
Writing a Web Service that Uses Parameter-Based Methods	p. 595
Using an HTML Form to Interact with a Web Service	p. 597
Creating a Proxy for Your Web Service	p. 598
Using a Web Service from Within an ASP.NET Page	p. 601
Looking Behind the Scenes at Your Service's Web Service Description Language	p. 602
Handling Exceptions in Web Services	p. 604
Leveraging the Web Service Configuration Files	p. 605
Looking Behind the Scenes at Your Web Service's SOAP	p. 606
Building a Proxy Using WSDL.EXE	p. 606
Changing the Web Service Namespace	p. 609
Helping Others Discover Your Web Service	p. 609
Getting Started with ADO.NET	p. 612
Specifying a Data Provider	p. 613
Issuing a Query Using a DataReader Object	p. 615
Issuing a Query Using a DataSet Object	p. 617
Handling Data Set Updates Behind the Scenes	p. 618
Querying a Database about Its Tables	p. 620
Querying a Table about Its Columns	p. 622
Viewing the Underlying XML Content	p. 623
Building a Data Set from an XML File	p. 625
Performing a Query Using an ASP.NET Page	p. 628
Displaying a Database Table in a DataGrid Control	p. 631
Programming .NET Reflection and Program Attributes	p. 634
Revisiting .NET Reflection	p. 635
Viewing Class Information in ILDASM	p. 638
Revisiting an Object's Methods	p. 640
Taking a Closer Look at an Object's Methods	p. 644
Contrasting Early and Late Binding	p. 646
Invoking an Object Method Using Invoke	p. 649
Taking a Closer Look at an Assembly	p. 652
Making Sense of [left angle bracket]Attributes[right angle bracket]	p. 653
Defining a Custom Attribute	p. 654
Displaying an Assembly's Attributes	p. 656
Index	p. 657
Table of Contents provided by Syndetics. All Rights Reserved.

Visual Basic.NET Tips and Techniques

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