Visual Basic 2005 Cookbook

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ISBN: 9780596101770 | 0596101775
Cover: Paperback
Copyright: 9/30/2006

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The "Visual Basic 2005 Cookbook" offers the definitive collection of solutions and examples for the latest version of Microsoft's popular programming language. These concise recipes range from simple tasks to the more complex, organized with respect to the types of problems developers need to solve. Nearly every recipe contains a complete, documented code sample showing programmers how to solve the specific problem, as well as a discussion of how the underlying technology works, and outlines alternatives, limitations, and other considerations where appropriate. This book is an eye-opening "Aha!" experience for just about any Visual Basic developer.

Preface

xvii

Visual Basic Programming

(20)

Creating a Windows Forms Application

(9)

Creating a Console Application

(3)

Creating an ASP.NET Web Forms Application

(8)

The Development Environment

(24)

Discovering and Using a Code Snippet

(2)

Creating a New Snippet

(3)

Sharing Snippets

(1)

Adding Snippet Files to Visual Studio

(1)

Getting an Application's Version Number

(1)

Letting Visual Studio Automatically Update an Application's Version Number

(1)

Setting the Startup Form for an Application

(1)

Setting the Startup to a Sub Main Procedure

(1)

Getting an Application's Command Line

(2)

Testing an Application's Command Line

(1)

Obfuscating an Application

(3)

Determining if an Application Is Running in the Visual Studio Environment

(1)

Accessing Environment Variables

(1)

Accessing the Registry

(3)

Getting System Information

(4)

Getting the User's Name

(1)

Application Organization

(32)

Creating a Code Module

(2)

Creating a Class

(3)

Creating a Structure

(2)

Creating Other Item Types

(4)

Creating Object Instances

(1)

Initializing a Class Instance with Data

(2)

Releasing an Instance's Resources

(2)

Using Namespaces

(2)

Splitting a Class Across Multiple Files

(1)

Creating a Form Based on Another Form

(1)

Passing and Returning Structures and Other Objects

(1)

Creating and Using an Enumeration

(2)

Converting Between Numeric and String Enumeration Values

(1)

Creating a Method That Accepts Different Sets of Arguments

(1)

Using Standard Operators for Nonstandard Purposes

(3)

Enforcing Strong Data Typing in an Otherwise Weakly Typed Collection

(4)

Forms, Controls, and Other Useful Objects

(30)

Creating and Adding Controls at Runtime

(2)

Iterating Through All Controls on a Form

(2)

Sharing Event-Handler Logic Among Many Controls

(1)

Working with Timers

(1)

Determining if a Control Can Take the Focus

(1)

Programmatically Clicking a Button

(1)

Drawing a Control

(3)

Making a Form the Top-Most Form

(1)

Indicating the Accept and Cancel Buttons on a Form

(1)

Remembering a Form's Position Between Uses

(2)

Attaching a Control to the Edge of a Form

(2)

Moving or Resizing Controls as a Form Resizes

(3)

Limiting the Sizing of a Form

(1)

Centering a Form

(1)

Creating and Moving a Borderless Form

(2)

Creating a Fading Form

(1)

Creating a Nonrectangular Form

(2)

Changing Menus at Runtime

101

(3)

Creating Shortcut Menus

104

(3)

Strings

107

(68)

Using a StringBuilder

107

(2)

Creating a String of N Identical Characters

109

(2)

Creating a String by Repeating a String N Times

111

(1)

Obfuscating a String

112

(1)

Converting Binary Data to a Hexadecimal String

113

(2)

Extracting Substrings from Larger Strings

115

(1)

Converting a String's Case

116

(2)

Comparing Strings with Case Sensitivity

118

(1)

Comparing Strings Without Case Sensitivity

119

(1)

Converting Strings to and from Character Arrays

120

(1)

Converting Strings to and from Byte Arrays

121

(1)

Tallying Characters

122

(2)

Counting Words

124

(1)

Removing Extra Whitespace

125

(1)

Using the Correct End-of-Line Characters

126

(2)

Replacing Substrings

128

(1)

Inserting a Character or String

129

(1)

Inserting a Line

130

(3)

Double-Spacing a String

133

(1)

Formatting Numbers into Strings

134

(2)

Trimming Sets of Characters from a String

136

(1)

Identifying and Validating Types of Data in a String

137

(2)

Converting Strings Between Encoding Systems

139

(2)

Determining a Character's Type

141

(2)

Parsing Strings

143

(1)

Concatenating Strings

144

(2)

Speeding Up String Manipulation

146

(2)

Counting Occurrences of a Substring

148

(2)

Padding a String for Exact Length and Alignment

150

(1)

Converting Tabs to Spaces

151

(2)

Reversing a String

153

(1)

Shuffling a String

154

(1)

Using a Simple String Encryption

155

(3)

Converting a String to Morse Code

158

(1)

Adding Strings to an Application's Resources

159

(2)

Converting Any Data to a String

161

(1)

Using Regular Expressions to Extract All Numbers

162

(2)

Getting a Count of Regular Expression Matches

164

(1)

Getting the Nth Regular Expression Match

165

(1)

Compiling Regular Expressions for Speed

166

(2)

Using Regular Expressions to Validate Data

168

(1)

Using Regular Expressions to Count Characters, Words, or Lines

169

(1)

Converting a String to and from Base64

170

(2)

Splitting a String

172

(1)

Creating a String of Space Characters

173

(2)

Numbers and Math

175

(80)

Using Compact Operator Notation

175

(3)

Choosing Integers of the Right Size and Type for the Job

178

(2)

Using Unsigned Integers

180

(1)

Swapping Two Integers Without Using a Third

181

(2)

Using Single- and Double-Precision Variables

183

(1)

Using Decimal Variables for Maximum Precision

184

(1)

Converting Between Number Types

185

(3)

Rounding Numbers Accurately

188

(1)

Declaring Loop Counters Within Loops

189

(1)

Converting Between Radians and Degrees

190

(1)

Limiting Angles to a Range

191

(2)

Creating Double-Precision Point Variables

193

(2)

Converting Between Rectangular and Polar Coordinates

195

(2)

Creating Three-Dimensional Variables

197

(1)

Converting Between Rectangular, Spherical, and Cylindrical Coordinates

198

(3)

Working with Complex Numbers

201

(3)

Solving Right Triangles

204

(4)

Solving Any Triangle

208

(7)

Determining if a String Contains a Valid Number

215

(1)

Converting Numbers to Integers

216

(2)

Calculating π to Thousands of Digits

218

(4)

Getting a Number's Prime Factors

222

(2)

Using Recursion to Calculate Factorials

224

(1)

Manipulating Bits with Bitwise Operators

225

(2)

Storing and Retrieving Bits in a BitArray

227

(3)

Enhancing the Random Number Generator

230

(4)

Generating Random Integers in a Range

234

(2)

Generating Random Real Numbers in a Range

236

(1)

Generating Normal-Distribution Random Numbers

237

(2)

Generating Exponential-Distribution Random Numbers

239

(1)

Creating a Matrix

240

(1)

Inverting a Matrix

241

(2)

Calculating the Determinant of a Matrix

243

(2)

Solving Simultaneous Equations

245

(2)

Listing of the MatrixHelper Class

247

(8)

Dates and Times

255

(31)

Getting the System Date and Time

255

(2)

Accessing the System's Time Zone

257

(1)

Using System Ticks

258

(2)

Timing Application Activities

260

(1)

Calculating Elapsed Time Using Ticks

261

(1)

Calculating Elapsed Time with the Stopwatch

262

(1)

Extracting Year, Month, and Day Numbers from a Date Value

263

(1)

Extracting Hour, Minute, and Second Numbers from a Date Value

264

(2)

Creating a Date or Time Value from Its Parts

266

(1)

Formatting Dates and Times

267

(3)

Parsing and Validating Dates and Times

270

(1)

Adding to Dates and Times

271

(2)

Subtracting from Dates and Times

273

(1)

Determining the Number of Days Between Two Dates

274

(2)

Determining the Day of the Week for a Date

276

(1)

Determining the Day of the Year for a Date

277

(1)

Determining the Number of Days in a Month

277

(1)

Using Controls to Enter or Select a Date

278

(3)

Calculating the Phase of the Moon

281

(1)

Creating a Calendar

282

(2)

Checking for Leap Years

284

(1)

Dates and Times in ISO 8601 Formats

284

(2)

Arrays and Collections

286

(33)

Filling an Array While Declaring It

286

(1)

Sorting Array Elements

287

(3)

Reversing an Array

290

(2)

Inserting into an Array

292

(2)

Shuffling an Array

294

(1)

Swapping Two Array Values

295

(2)

Resizing Arrays Without Losing Existing Values

297

(1)

Quickly Copying Part of an Array into Another

298

(3)

Writing a Comma-Separated-Values File from a String Array

301

(1)

Reading a Comma-Separated-Values File into a String Array

302

(2)

Using a Multivalue Array Instead of a Two-Dimensional Array

304

(2)

Converting Between Delimited Strings and Arrays

306

(1)

Formatting an Array as a Single String

307

(2)

Iterating Through Array Elements

309

(1)

Passing Arrays to Methods

310

(2)

Returning Arrays from Functions

312

(1)

Creating a Collection

313

(2)

Inserting an Item into a Collection

315

(1)

Deleting a Collection Item

316

(1)

Iterating Through a Collection

317

(2)

Graphics

319

(80)

Creating Graphics Objects

319

(3)

Drawing on Controls for Special Effects

322

(4)

Letting the User Select a Color

326

(2)

Working with Coordinate Systems (Pixels, Inches, Centimeters)

328

(4)

Creating a Bitmap

332

(3)

Setting a Background Color

335

(1)

Drawing Lines, Ellipses, and Rectangles

336

(4)

Drawing Lines One Pixel Wide Regardless of Scaling

340

(2)

Forcing a Form or Control to Redraw

342

(3)

Using Transparency

345

(2)

Scaling with Transforms

347

(3)

Using an Outline Path

350

(2)

Using Gradients for Smooth Color Changes

352

(3)

Drawing Bezier Splines

355

(2)

Drawing Cardinal Splines

357

(2)

Limiting Display Updates to Specific Regions

359

(2)

Drawing Text

361

(5)

Rotating Text to Any Angle

366

(1)

Mirroring Text on the Canvas

367

(3)

Getting the Height and Width of a Graphic String

370

(3)

Drawing Text with Outlines and Drop Shadows

373

(2)

Calculating a Nice Axis

375

(2)

Drawing a Simple Chart

377

(4)

Creating Odd-Shaped Forms and Controls

381

(2)

Using the RGB, HSB (HSV), and HSL Color Schemes

383

(4)

Creating a Rubber-Band Rectangular Selection

387

(6)

Animating with Transparency

393

(2)

Substitutions for Obsolete Visual Basic 6.0 Features

395

(4)

Multimedia

399

(58)

Playing an Audio File

399

(2)

Displaying Image Files

401

(2)

Playing a Video File

403

(1)

Making Your Computer Beep

403

(2)

Creating an Animation Using Multiple Images

405

(3)

Creating an Animation by Generating Multiple Bitmaps

408

(3)

Creating an Animation by Drawing at Runtime

411

(1)

Creating Animated Sprites

412

(5)

Resizing and Compressing JPEG Files

417

(4)

Getting JPEG Extended Information

421

(3)

Creating Thumbnails

424

(1)

Displaying Images While Controlling Stretching and Sizing

424

(5)

Scrolling Images

429

(2)

Merging Two or More Images

431

(3)

Using Resource Images

434

(1)

Capturing an Image of the Screen

435

(4)

Getting Display Dimensions

439

(2)

Speeding Up Image Processing

441

(4)

Converting an Image to Grayscale

445

(3)

Performing Edge Detection on an Image

448

(3)

Full Listing of the LockImage Class

451

(6)

Printing

457

(16)

Enumerating Printers

457

(1)

Sending ``Raw'' Data to a Printer

458

(3)

Get Details About the Default Printer

461

(1)

Creating a Print Preview

462

(2)

Prompting for Printed Page Settings

464

(2)

Drawing Text and Graphics to a Printer

466

(2)

Determining the Print Destination

468

(2)

Creating Graph Paper

470

(3)

Files and File Systems

473

(53)

Enumerating Drives

473

(2)

Determining if a Directory Exists

475

(2)

Creating a New Directory

477

(1)

Copying Directories

478

(2)

Moving Directories

480

(1)

Renaming Directories

481

(2)

Parsing File and Directory Paths

483

(1)

Searching Iteratively Through Directories and Subdirectories

484

(3)

Finding Directories and Files Using Wildcards

487

(3)

Determining if a File Exists

490

(1)

Getting and Setting File Attributes

491

(2)

Accessing Special User and Windows Directories

493

(5)

Determining the Space on a Drive

498

(2)

Browsing for a Directory

500

(2)

Getting File Information

502

(2)

Using File-Access Methods

504

(4)

Reading and Writing Files as Strings

508

(2)

Reading and Writing Binary Files

510

(1)

Copying or Moving a File

511

(2)

Sending a File to the Recycle Bin

513

(1)

Creating a Temporary File

514

(1)

Calculating a Checksum for a File

515

(3)

Comparing Two Files for Equality

518

(1)

Locking a File During Access

519

(1)

Reading from a File at a Specific Position

520

(1)

Reading and Writing Objects in a File

521

(3)

Creating a Comma-Separated-Values File

524

(2)

Databases

526

(19)

Connecting to a Data Provider

526

(3)

Issuing SQL Commands

529

(1)

Retrieving Results from a Database Query

530

(2)

Using SQL Parameters

532

(2)

Using Stored Procedures

534

(2)

Using Transactions

536

(1)

Storing the Results of a Query in Memory

537

(4)

Creating In-Memory Data Tables Manually

541

(1)

Writing In-Memory Data Tables to an XML File

542

(2)

Reading an XML File into In-Memory Data Tables

544

(1)

Special Programming Techniques

545

(88)

Preventing Multiple Instances of a Running Application

545

(3)

Creating a Simple User Control

548

(4)

Describing User Control Properties

552

(2)

Starting Other Applications by EXE, Document, or URL

554

(2)

Waiting for Applications to Finish

556

(1)

List All Running Processes

557

(1)

Terminating a Running Process

558

(2)

Pausing Execution of a Program

560

(1)

Control Applications by Simulating Keystrokes

561

(4)

Watching for File and Directory Changes

565

(3)

Creating an Icon in the System Tray

568

(1)

Accessing the Clipboard

569

(4)

Adding Tooltips to Controls

573

(1)

Dragging and Dropping Files to a ListBox

574

(2)

Dragging and Dropping Between ListBox Controls

576

(4)

Disposing of Objects Appropriately

580

(2)

Fine-Tuning Garbage Collection

582

(2)

Moving the (Mouse) Cursor

584

(1)

Intercepting All Key Presses on a Form

585

(1)

Accessing the Registry

586

(6)

Running Procedures in Threads

592

(4)

Reading XML into a TreeView

596

(3)

Creating an XML Document

599

(5)

Validating an XML Document

604

(1)

Using Generic Collections

605

(2)

Creating a Screensaver

607

(6)

Localizing the Controls on a Form

613

(3)

Adding Pop-up Help to Controls

616

(1)

Maintaining User-Specific Settings Between Uses of an Application

617

(2)

Verifying a Credit Card Number

619

(2)

Capturing a Console Application's Output

621

(3)

Reading an Assembly's Details

624

(3)

Performing Serial I/O

627

(2)

Rebooting the System

629

(4)

Exceptions

633

(11)

Catching an Exception

633

(2)

Throwing an Exception

635

(1)

Catching Unhandled Exceptions

636

(3)

Displaying Exception Information

639

(1)

Creating New Exception Types

640

(2)

Ignoring Exceptions in a Block of Code

642

(2)

Cryptography and Compression

644

(27)

Generating a Hash

644

(2)

Encrypting and Decrypting a String

646

(4)

Encrypting and Decrypting a File

650

(3)

Prompting for a Username and Password

653

(2)

Handling Passwords Securely

655

(1)

Compressing and Decompressing a String

656

(2)

Compressing and Decompressing a File

658

(4)

Generating Cryptographically Secure Random Numbers

662

(1)

Complete Listing of the Crypto.vb Module

663

(5)

Complete Listing of the Compress.vb Module

668

(3)

Web Development

671

(28)

Displaying Web Pages on a Form

671

(4)

Accessing Content Within an HTML Document

675

(1)

Getting All Links from a Web Page

676

(3)

Get the Local Computer's IP Address

679

(1)

Resolving a Host Name or IP Address for Another Computer

680

(1)

Pinging an IP Address

681

(1)

Using FTP to Download Files

682

(2)

Calling a Web Service

684

(3)

Sending Email Using SMTP

687

(2)

Getting POP3 Emails

689

(7)

Sending a Message to Another Computer

696

(1)

Adding Hyperlinks to a (Desktop) Form

697

(2)

Index

699

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Visual Basic 2005 Cookbook

Summary

Author Biography

Table of Contents

Supplemental Materials