book

Programming Visual Basic .NET

by Dave Grundgeiger

December 2001

Beginner

464 pages

13h 51m

English

O'Reilly Media, Inc.

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Organization of This Book
What Is the Microsoft .NET Framework?
hello, worldHello, WindowsHello, Browser
Source Files

Numeric LiteralsString LiteralsCharacter LiteralsDate LiteralsBoolean LiteralsNothingSummary of Literal Formats
Fundamental TypesCustom TypesArraysInitializing arraysDynamically allocating arraysCollectionsType Conversions
The Namespace StatementThe Imports Statement
Variable Initializers
Unary OperatorsArithmetic OperatorsRelational OperatorsString-Concatenation OperatorsBitwise OperatorsLogical OperatorsOperator PrecedenceOperator Overloading
Option StatementsBranching StatementsCallExitGotoIfRaiseEventReturnSelect CaseIteration StatementsDoForFor EachMathematical FunctionsInput/Output
Object Instantiation and NewConstructorsFieldsRead-only fieldsHandling EventsInheritanceMethodsMethod parametersPassing arrays as parametersVariable-length parameter listsMain methodImplementing interface methodsOverriding inherited methodsOverloadingOverloading inherited methodsShadowingPropertiesThe Me and MyClass KeywordsThe MyBase KeywordNested ClassesDestructorsEarly Versus Late Binding
Boxing and Unboxing
Using Events and Delegates Together
Creating Custom AttributesReading Attributes
Common Language Infrastructure (CLI) and Common Language Runtime (CLR)
Namespaces
Global Assembly Cache (GAC)Comparison of Assemblies, Modules, and Namespaces
FinalizeDispose
Configuration File FormatConfiguration Section GroupsThe <appSettings> Section
Creating a FormCreating a Form Using Visual Studio .NETAdding event handlersCreating a Form in CodeAdding event handlers
Parent and Child FormsCreating a Window MenuMerging MenusDetecting MDI Child Window Activation
The Graphics ClassThe Pen ClassThe Brush ClassThe Color StructureSystem colorsAlpha BlendingAntialiasing
Hello, Printer!The PrintPageEventArgs ClassThe OnBeginPrint and OnEndPrint MethodsChoosing a PrinterThe PageSettings ClassThe PrinterSettings ClassPage Setup Dialog BoxPrint PreviewSummary of Printing
Common Controls and ComponentsThe Button ClassThe CheckBox ClassThe ComboBox ClassThe DateTimePicker ClassThe GroupBox ClassThe ImageList ClassThe Label ClassThe LinkLabel ClassThe ListBox ClassThe ListBox.ObjectCollection ClassThe ListView ClassThe MonthCalendar ClassThe Panel ClassThe PictureBox ClassThe RadioButton ClassThe TextBox ClassThe Timer ClassOther Controls and Components
The Anchor PropertyThe Dock PropertyControlling dock orderThe Splitter control
ColorDialogFontDialogOpenFileDialogPageSetupDialogPrintDialogPrintPreviewDialogSaveFileDialog
Adding Menus in the Visual Studio .NET Windows Forms DesignerProgrammatically Creating MenusHandling Menu EventsCloning Menus
Building Controls from Other ControlsBuilding Controls That Draw ThemselvesBuilding Nonrectangular Controls
Creating a Web FormCreating a Form Using Visual Studio .NETAdding event handlersCreating a Form in CodeSetting control properties using attributesAdding event handlers
AutoEventWireup
Web ControlsThe Button controlThe CheckBox controlThe DropDownList controlThe Image controlThe Label controlThe ListBox controlThe RadioButton controlThe Table controlThe TextBox controlOther web controlsHTML ControlsHandling Control EventsProgrammatically Instantiating Controls
More About Validation-Control Tag AttributesUsing Validation-Control PropertiesProviding a Summary View of Validation FailuresPerforming Custom Validation
The Server ObjectThe Application ObjectThe Session ObjectThe Cache ObjectThe Request ObjectThe Response Object
The Session ObjectThe Application ObjectCookies
Session and Application Startup and Shutdownglobal.asax Compiles to a ClassAdding Global Objects
AuthenticationForms authenticationWindows authenticationIntegrated Windows authenticationDigest authenticationBasic authenticationUnderstanding authenticationAuthorizationASP.NET authorizationWindows NTFS authorizationCode-access authorizationAccessing Network ResourcesIUSR_ComputerNameImpersonation
User ControlsServer ControlsCreating a custom server control using Visual Studio .NETCreating a custom server control in codeUsing a custom server control in Visual Studio .NETUsing a custom server control manually
Creating a Web ServiceThe WebService AttributeThe WebMethod AttributeThe WebService Class
Consuming a Web Service in Visual Studio .NETConsuming a Web Service in NotepadSynchronous Versus Asynchronous Calls
A Brief History of Universal Data Access
The DataSet ClassFinding TablesFinding RowsThe Select method versus the SQL SELECT statementFinding Column ValuesFinding Column DefinitionsChanging, Adding, and Deleting RowsWriting Updates Back to the Data Source
.NET Information

Content preview from Programming Visual Basic .NET

Common Type System (CTS)

The CLI specification defines a rich type system that far surpasses COM’s capabilities. It’s called the Common Type System (CTS). The CTS defines at the runtime level how types are declared and used. Previously, language compilers controlled the creation and usage of types, including their layout in memory. This led to problems when a component written in one language tried to pass data to a component written in a different language. Anyone who has written Visual Basic 6 code to call Windows API functions, for instance, or who has tried to pass a JavaScript array to a component written either in Visual Basic 6 or C++, is aware of this problem. It was up to the developer to translate the data to be understandable to the receiving component. The CTS obliterates this problem by providing the following features:

Primitive types (Integer, String, etc.) are defined at the runtime level. Components can easily pass instances of primitive types between each other because they all agree on how that data is formatted.
Complex types (structures, classes, enumerations, etc.) are constructed in a way that is defined at the runtime level. Components can easily pass instances of complex types between each other because they all agree on how complex types are constructed from primitive types.
All types carry rich type information with them, meaning that a component that is handed an object can find out the definition of the type of which the object is an instance. This ...