Indicates that an array in a structure or non-local variable should be treated as a fixed length array.

<System.AttributeUsage(System.AttributeTargets.Field, _
   Inherited := False, AllowMultiple := False)> _
Public NotInheritable Class VBFixedArrayAttribute
   Inherits System.Attribute

Remarks

Visual Basic .NET arrays are of variable length by default. This attribute is useful when using Visual Basic .NET file input and output functions, such as FileGet and FilePut, and API calls that require fixed length arrays.

Example

    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.

Requirements

Namespace: Microsoft.VisualBasic

Assembly: Microsoft Visual Basic .NET Runtime (in Microsoft.VisualBasic.dll)

See Also

Attributes | VBFixedArrayAttribute Class Members | VBFixedStringAttribute Class | MarshalAsAttribute Class | ComClassAttribute Class | FileGet Function | FilePut Function | FileOpen Function