VBFixedArrayAttribute Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Indicates that an array in a structure or non-local variable should be treated as a fixed-length array.
public ref class VBFixedArrayAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple=false, Inherited=false)]
public sealed class VBFixedArrayAttribute : Attribute
[<System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple=false, Inherited=false)>]
type VBFixedArrayAttribute = class
inherit Attribute
Public NotInheritable Class VBFixedArrayAttribute
Inherits Attribute
- Inheritance
- Attributes
Examples
Structure Book
<VBFixedArray(4)> Public Chapter() As Integer
End Structure
Sub WriteData()
Dim FileNum As Integer = FreeFile()
Dim MyBook As Book
ReDim MyBook.Chapter(4)
' Add code to populate the array.
MyBook.Chapter(0) = 1
MyBook.Chapter(1) = 2
MyBook.Chapter(2) = 3
MyBook.Chapter(3) = 4
MyBook.Chapter(4) = 5
' Write the array to a file.
FileOpen(FileNum, "C:\testfile", OpenMode.Binary,
OpenAccess.Write, OpenShare.Default)
FilePut(FileNum, MyBook) ' Write data.
FileClose(FileNum)
End Sub
Note
The VBFixedArrayAttribute
is informational and does not allocate any storage. The purpose of this attribute is to modify how arrays in structures and non-local variables are used by methods or API calls that recognize the VBFixedArrayAttribute
. Keep in mind that this attribute does not convert a variable length array to a fixed array and that you must still allocate array storage using Dim
or ReDim
statements.
Remarks
Visual Basic arrays are of variable length by default. This attribute is useful when using Visual Basic file input and output functions, such as FileGet
and FilePut
, and API calls that require fixed-length arrays.
Constructors
VBFixedArrayAttribute(Int32) |
Initializes the value of the |
VBFixedArrayAttribute(Int32, Int32) |
Initializes the value of the |
Properties
Bounds |
Returns the bounds of the array. |
Length |
Returns the size of the array. |
TypeId |
When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute) |
Methods
Equals(Object) |
Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute) |
GetHashCode() |
Returns the hash code for this instance. (Inherited from Attribute) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
IsDefaultAttribute() |
When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute) |
Match(Object) |
When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) |
Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute) |
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) |
Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute) |
_Attribute.GetTypeInfoCount(UInt32) |
Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute) |
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) |
Provides access to properties and methods exposed by an object. (Inherited from Attribute) |
Applies to
See also
Обратна връзка
https://aka.ms/ContentUserFeedback.
Очаквайте скоро: През цялата 2024 г. постепенно ще отстраняваме проблемите в GitHub като механизъм за обратна връзка за съдържание и ще го заменим с нова система за обратна връзка. За повече информация вижте:Подаване и преглед на обратна връзка за