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    Copyright
    Before You Begin
    Ch. 1. Introduction to Visual Basic .NET
    Ch. 2. A–Z Reference
    #Const Directive
    #ExternalSource Directive
    #If...Then...#Else Directives
    #Region Directive
    & Operator
    &= Operator
    * Operator
    *= Operator
    + Operator
    += Operator
    - Operator
    -= Operator
    / Operator
    /= Operator
    = Operator
    \ Operator
    \= Operator
    ^ Operator
    ^= Operator
    Add Method
    AddHandler Statement
    AddressOf Operator
    Alias
    And Operator
    AndAlso Operator
    Ansi
    AppActivate Function
    AppWinStyle Enumeration
    As
    Asc, AscW Functions
    Assembly
    Auto
    Beep Function
    Boolean Data Type
    ByRef
    Byte Data Type
    ByVal
    Call Statement
    CallByName Function
    CallType Enumeration
    Case
    Char Data Type
    ChDir Function
    ChDrive Function
    Choose Function
    Chr, ChrW Functions
    Class Statement
    Clear Method
    Collection Object
    ComClassAttribute Class
    ComClassAttribute Constructor
    ComClassAttribute.ClassID Property
    ComClassAttribute.EventID Property
    ComClassAttribute.InterfaceID Property
    ComClassAttribute.InterfaceShadows Property
    Command Function
    CompareMethod Enumeration
    Const Statement
    Count Property
    CreateObject Function
    CType Function
    CurDir Function
    Date Data Type
    DateAdd Function
    DateDiff Function
    DateFormat Enumeration
    DateInterval Enumeration
    DatePart Function
    DateSerial Function
    DateString Property
    DateValue Function
    Day Function
    DDB Function
    Decimal Data Type
    Declare Statement
    Default
    Delegate Statement
    DeleteSetting Function
    Derived Math Functions
    Description Property
    Different Formats for Different Numeric Values (Format Function)
    Dim Statement
    Dir Function
    DirectCast
    Do...Loop Statements
    Double Data Type
    DueDate Enumeration
    Each
    Else
    ElseIf
    End
    End Statement
    Enum Statement
    Environ Function
    EOF Function
    Erase Statement
    Erl Property
    Err Object
    Error
    Error Statement
    ErrorToString Function
    Event Statement
    Exit Statement
    Explicit
    False
    FileAttr Function
    FileAttribute Enumeration
    FileClose Function
    FileCopy Function
    FileDateTime Function
    FileGet Function
    FileGetObject Function
    FileLen Function
    FileOpen Function
    FilePut Function
    FilePutObject Function
    FileWidth Function
    Filter Function
    FirstDayOfWeek Enumeration
    FirstWeekOfYear Enumeration
    For
    For Each...Next Statements
    For...Next Statements
    Format Function
    FormatCurrency Function
    FormatDateTime Function
    FormatNumber Function
    FormatPercent Function
    FreeFile Function
    Friend
    Function Statement
    FV Function
    Get Statement
    GetAllSettings Function
    GetAttr Function
    GetChar Function
    GetEnumerator Method
    GetException Function
    GetObject Function
    GetSetting Function
    GetType Operator
    GoTo Statement
    Handles
    HelpContext Property
    HelpFile Property
    Hex Function
    Hour Function
    If...Then...Else Statements
    IIf Function
    Implements
    Implements Statement
    Imports Statement
    In
    Inherits Statement
    Input Function
    InputBox Function
    InputString Function
    InStr Function
    InStrRev Function
    Int, Fix Functions
    Integer Data Type
    Interface Statement
    IPmt Function
    IRR Function
    Is
    Is Operator
    IsArray Function
    IsDate Function
    IsDBNull Function
    IsError Function
    IsNothing Function
    IsNumeric Function
    IsReference Function
    Item Property
    Join Function
    Kill Function
    LastDLLError Property
    LBound Function
    LCase Function
    Left Function
    Len Function
    Lib
    Like Operator
    LineInput Function
    Loc Function
    Lock, Unlock Functions
    LOF Function
    Long Data Type
    Loop
    LSet Function
    LTrim, RTrim, and Trim Functions
    Math Functions
    Me
    Mid Function
    Mid Statement
    Minute Function
    MIRR Function
    MkDir Function
    Mod Operator
    Module
    Module Statement
    Month Function
    MonthName Function
    MsgBox Function
    MsgBoxResult Enumeration
    MsgBoxStyle Enumeration
    MustInherit
    MustOverride
    MyBase
    MyClass
    Namespace Statement
    New
    Next
    Not Operator
    Nothing
    NotInheritable
    NotOverridable
    Now Property
    NPer Function
    NPV Function
    Number Property
    Object Data Type
    Objects
    Oct Function
    Off
    On
    On Error Statement
    OpenAccess Enumeration
    OpenMode Enumeration
    OpenShare Enumeration
    Operators Summary
    Option
    Option Compare Statement
    Option Explicit Statement
    Option Strict Statement
    Optional
    Or Operator
    OrElse Operator
    Overloads
    Overridable
    Overrides
    ParamArray
    Partition Function
    Pmt Function
    PPmt Function
    Predefined Date/Time Formats (Format Function)
    Predefined Numeric Formats (Format Function)
    Preserve
    Print and Display Constants
    Print, PrintLine Functions
    Private
    Property Statement
    Protected
    Public
    PV Function
    QBColor Function
    Raise Method
    RaiseEvent Statement
    Randomize Statement
    Rate Function
    ReadOnly
    ReDim Statement
    REM Statement
    Remove Method
    RemoveHandler Statement
    Rename Function
    Replace Function
    Reset Function
    Resume
    Resume Statement
    Return Statement
    Returns for CStr
    RGB Function
    Right Function
    RmDir Function
    Rnd Function
    RSet Function
    SaveSetting Function
    ScriptEngine Property
    ScriptEngineBuildVersion Property
    ScriptEngineMajorVersion Property
    ScriptEngineMinorVersion Property
    Second Function
    Seek Function
    Select...Case Statements
    Set Statement
    SetAttr Function
    Shadows
    Shared
    Shell Function
    Short Data Type
    Single Data Type
    SLN Function
    Source Property
    Space Function
    SPC Function
    Split Function
    Static
    Step
    Stop Statement
    Str Function
    StrComp Function
    StrConv Function
    StrDup Function
    String Data Type
    StrReverse Function
    Structure Statement
    Sub Statement
    Switch Function
    SYD Function
    SyncLock Statement
    SystemTypeName Function
    TAB Function
    Then
    Throw Statement
    TimeOfDay Property
    Timer Property
    TimeSerial Function
    TimeString Property
    TimeValue Function
    To
    Today Property
    Tristate Enumeration
    True
    Try...Catch...Finally Statements
    Type Conversion Functions
    TypeName Function
    TypeOf
    UBound Function
    UCase Function
    Unicode
    Until
    User-Defined Data Type
    User-Defined Date/Time Formats (Format Function)
    User-Defined Numeric Formats (Format Function)
    Val Function
    VariantType Enumeration
    VarType Function
    VBFixedArrayAttribute Class
    VBFixedArrayAttribute Constructor
    VBFixedArrayAttribute.FirstBound Field
    VBFixedArrayAttribute.SecondBound Field
    VBFixedStringAttribute Class
    VBFixedStringAttribute Constructor
    VBFixedStringAttribute.SizeConst Field
    VbStrConv Enumeration
    VbTypeName Function
    Weekday Function
    WeekdayName Function
    When
    While
    While...End While Statements
    With...End With Statements
    WithEvents
    Write, WriteLine Functions
    WriteOnly
    Xor Operator
    Year Function
    Appx. A. Operators
    Appx. B. Summary Lists
    Appx. C. Member Lists
    Appx. D. Conversion Functions
    Appx. E. Visual Basic Compiler Options
    Appx. F. Work Light
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    2.208. MustOverride

    The MustOverride keyword specifies that a property or procedure in a base class must be overridden in a derived class before it can be used.

    The MustOverride keyword is used in these contexts:


      

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