book

Beginning Visual Basic 2012

by Bryan Newsome

September 2012

Beginner

744 pages

19h 30m

English

Wrox

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Event-Driven ProgrammingInstalling Visual Basic 2012The Visual Studio 2012 IDECreating a Simple ApplicationUsing the Help SystemSummary
Microsoft's Reliance on WindowsWriting Software for WindowsCommon Language RuntimeThe Common Type System and Common Language SpecificationSummary
Information and DataWorking with VariablesComments and WhitespaceData TypesStoring VariablesMethodsSummary
Making DecisionsThe If StatementSelect CaseLoopsSummary
Understanding ArraysUnderstanding EnumerationsUnderstanding ConstantsStructuresWorking with ArrayListsWorking with CollectionsBuilding Lookup Tables with HashtableAdvanced Array ManipulationSummary
What Is XAML?XAML SyntaxWindows Presentation FoundationSummary
Responding to EventsBuilding a Simple ApplicationCounting CharactersCounting WordsCreating More Complex ApplicationsCreating the ToolbarCreating the Status BarCreating an Edit BoxClearing the Edit BoxResponding to Toolbar ButtonsUsing Multiple FormsAbout DialogSummary
The MessageBoxThe OpenFileDialog ControlThe SaveDialog ControlThe FontDialog ControlThe ColorDialog ControlThe PrintDialog ControlThe FolderBrowserDialog ControlSummary
Understanding Menu FeaturesCreating MenusContext MenusSummary

Major Error TypesDebuggingError HandlingSummary
Understanding ObjectsBuilding ClassesReusabilityDesigning an ObjectConstructorsInheritanceObjects and StructuresThe Framework ClassesSummary
Building a Favorites ViewerAn Alternative Favorite ViewerUsing Shared Properties and MethodsUnderstanding Object-Oriented Programming and Memory ManagementSummary
Understanding Class LibrariesUsing Strong NamesRegistering AssembliesDesigning Class LibrariesUsing Third-Party Class LibrariesViewing Classes with the Object BrowserSummary
Windows Forms ControlsCreating and Testing a User ControlExposing Properties from User ControlsDesign Time or RuntimeCreating a Command Link ControlSummary
What You Need to Complete This Chapter's ExercisesWhat Is a Database?Understanding Basic SQL SyntaxExecuting Queries in SQL ServerSummary
ADO.NETADO.NET Data NamespacesThe ADO.NET Classes in ActionData BindingSummary
Creating a Dynamic Data Entities WebsiteCustomizing the Design of a Dynamic Data WebsiteSummary
Thin-Client ArchitectureWeb Forms versus Windows FormsWeb Applications: The Basic PiecesActive Server PagesBuilding WebsitesSummary
What Is Deployment?Creating a Visual Studio 2012 Setup ApplicationCustomize the User InterfaceDeploying Different SolutionsSummary
Windows 8 Application Design PrinciplesApplication LayoutSummary
Chapter 1Chapter 2Chapter 3Chapter 4Chapter 5Chapter 6Chapter 7Chapter 8Chapter 9Chapter 10Chapter 11Chapter 12Chapter 13Chapter 14Chapter 15Chapter 16Chapter 17Chapter 18Chapter 19Chapter 20
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Content preview from Beginning Visual Basic 2012

Chapter 11

Building Objects

What You Will Learn in this Chapter

Building a reusable object with methods and properties
Inheriting the object that you build in another object
Overriding methods and properties in your base object
Creating your own namespace

Wrox.com Code Downloads for this Chapter

The wrox.com code downloads for this chapter are found at www.wrox.com/remtitle.cgi?isbn=1118311813 on the Download Code tab. The code is in the 311813 C11.zip download and individually named according to the names given throughout the chapter.

You may have heard the term object-oriented a lot since you first started using computers. You may also have heard that it is a scary and tricky subject to understand. In its early years it was, but today's modern tools and languages make object orientation (OO) a wonderfully easy-to-understand concept that brings massive benefits to software developers. This is mainly because languages such as Visual Basic and C# have matured to a point where they make creating objects and the programs that use them very easy indeed. With these languages, you will have no problem understanding even the most advanced object-oriented concepts and will be able to use them to build exciting object-based applications.

You have been using objects and classes throughout this book, but in this chapter you look at OO in detail and build on the foundations of the previous chapters to start producing some cool applications using Visual Basic 2012.