Visual Basic Run-Time Library Members

The Microsoft.VisualBasic namespace contains the classes, modules, constants, and enumerations that constitute the Visual Basic run-time library. These library members provide procedures, properties, and constant values you can use in your code. Each module and class represents a particular category of functionality.

Microsoft.VisualBasic.Collection Class

Add	Clear	Contains	Count
GetEnumerator	Item	Remove

Microsoft.VisualBasic.ComClassAttribute Class

ClassID

EventID

InterfaceID

InterfaceShadows

Microsoft.VisualBasic.ControlChars Class

Back	Cr	CrLf	FormFeed
Lf	NewLine	NullChar	Quote
Tab	VerticalTab

Microsoft.VisualBasic.Constants Class

vbAbort	vbAbortRetryIgnore	vbApplicationModal	vbArchive
vbArray	vbBack	vbBinaryCompare	vbBoolean
vbByte	vbCancel	vbCr	vbCritical
vbCrLf	vbCurrency	vbDate	vbDecimal
vbDefaultButton1	vbDefaultButton2	vbDefaultButton3	vbDirectory
vbDouble	vbEmpty	vbExclamation	vbFalse
vbFirstFourDays	vbFirstFullWeek	vbFirstJan1	vbFormFeed
vbFriday	vbGeneralDate	vbGet	vbHidden
vbHide	vbHiragana	vbIgnore	vbInformation
vbInteger	vbKatakana	vbLet	vbLf
vbLinguisticCasing	vbLong	vbLongDate	vbLongTime
vbLowerCase	vbMaximizedFocus	vbMethod	vbMinimizedFocus
vbMinimizedNoFocus	vbMonday	vbMsgBoxHelp	vbMsgBoxRight
vbMsgBoxRtlReading	vbMsgBoxSetForeground	vbNarrow	vbNewLine
vbNo	vbNormal	vbNormalFocus	vbNormalNoFocus
vbNull	vbNullChar	vbNullString	vbObject
vbObjectError	vbOK	vbOKCancel	vbOKOnly
vbProperCase	vbQuestion	vbReadOnly	vbRetry
vbRetryCancel	vbSaturday	vbSet	vbShortDate
vbShortTime	vbSimplifiedChinese	vbSingle	vbString
vbSunday	vbSystem	vbSystemModal	vbTab
vbTextCompare	vbThursday	vbTraditionalChinese	vbTrue
vbTuesday	vbUpperCase	vbUseDefault	vbUserDefinedType
vbUseSystem	vbUseSystemDayOfWeek	vbVariant	vbVerticalTab
vbVolume	vbWednesday	vbWide	vbYes
vbYesNo	vbYesNoCancel

Microsoft.VisualBasic.Conversion Module

ErrorToString	Fix	Hex	Int
Oct	Str	Val

Microsoft.VisualBasic.DateAndTime Module

DateAdd	DateDiff	DatePart	DateSerial
DateString	DateValue	Day	Hour
Minute	Month	MonthName	Now
Second	TimeOfDay	Timer	TimeSerial
TimeString	TimeValue	Today	WeekDay
WeekDayName	Year

Microsoft.VisualBasic.ErrObject Class

Clear	Description	Erl	GetException
HelpContext	HelpFile	LastDLLError	Number
Raise	Source

Microsoft.VisualBasic.FileSystem Module

ChDir	ChDrive	CurDir	Dir
EOF	FileAttr	FileClose	FileCopy
FileDateTime	FileGet	FileGetObject	FileLen
FileOpen	FilePut	FilePutObject	FileWidth
FreeFile	GetAttr	Input	InputString
Kill	LineInput	Loc	Lock
LOF	MkDir	Print	PrintLine
Rename	Reset	RmDir	Seek
SetAttr	SPC	TAB	Unlock
Write	WriteLine

Microsoft.VisualBasic.Financial Module

DDB	FV	IPmt	IRR
MIRR	NPer	NPV	Pmt
PPmt	PV	Rate	SLN
SYD

Microsoft.VisualBasic.Globals Module

ScriptEngine

ScriptEngineBuildVersion

ScriptEngineMajorVersion

ScriptEngineMinorVersion

Microsoft.VisualBasic.HideModuleNameAttribute Class

HideModuleNameAttribute

Microsoft.VisualBasic.Information Module

Erl	Err	IsArray	IsDate
IsDBNull	IsError	IsNothing	IsNumeric
IsReference	LBound	QBColor	RGB
SystemTypeName	TypeName	UBound	VarType
VbTypeName

Microsoft.VisualBasic.Interaction Module

AppActivate	Beep	CallByName	Choose
Command	CreateObject	DeleteSetting	Environ
GetAllSettings	GetObject	GetSetting	IIf
InputBox	MsgBox	Partition	SaveSetting
Shell	Switch

Microsoft.VisualBasic.MyGroupCollectionAttribute Class

CreateMethod

DefaultInstanceAlias

DisposeMethod

MyGroupName

Microsoft.VisualBasic.Strings Module

Asc	AscW	Chr	ChrW
Filter	Format	FormatCurrency	FormatDateTime
FormatNumber	FormatPercent	GetChar	InStr
InStrRev	Join	LCase	Left
Len	LSet	LTrim	Mid
Replace	Right	RSet	RTrim
Space	Split	StrComp	StrConv
StrDup	StrReverse	Trim	UCase

Microsoft.VisualBasic.VBFixedArrayAttribute Class

Bounds

Length

Microsoft.VisualBasic.VBFixedStringAttribute Class

Length

Microsoft.VisualBasic.VbMath Module

Randomize

Rnd

Microsoft.VisualBasic Constants and Enumerations

The Microsoft.VisualBasic namespace provides constants and enumerations as part of the Visual Basic run-time library. You can use these constant values in your code. Each enumeration represents a particular category of functionality. For more information, see Constants and Enumerations (Visual Basic).

See Also

Reference

Visual Basic Language Keywords

Keywords and Members by Task

Other Resources

Visual Basic Runtime Namespace in Visual Studio

Constants and Enumerations (Visual Basic)