VBFixedStringAttribute Class

Definition

Namespace:

Microsoft.VisualBasic

Assembly:

Microsoft.VisualBasic.Core.dll

Source:

VBFixedStringAttribute.vb

Indicates that a string should be treated as if it were fixed length.

public ref class VBFixedStringAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple=false, Inherited=false)]
public sealed class VBFixedStringAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Field, AllowMultiple=false, Inherited=false)>]
type VBFixedStringAttribute = class
    inherit Attribute

Public NotInheritable Class VBFixedStringAttribute
Inherits Attribute

Inheritance

Object

Attribute

VBFixedStringAttribute

Attributes

AttributeUsageAttribute

Examples

Structure Person
    Public ID As Integer
    Public MonthlySalary As Decimal
    Public LastReviewDate As Long
    <VBFixedString(15)> Public FirstName As String
    <VBFixedString(15)> Public LastName As String
    <VBFixedString(15)> Public Title As String
    <VBFixedString(150)> Public ReviewComments As String
End Structure

Note

The VBFixedStringAttribute is informational and cannot be used to convert a variable length string to a fixed string. The purpose of this attribute is to modify how strings in structures and non-local variables are used by methods or API calls that recognize the VBFixedStringAttribute. Keep in mind that this attribute does not change the actual length of the string itself.

Remarks

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

Constructors

VBFixedStringAttribute(Int32)

Initializes the value of the SizeConst field.

Properties

Length	Gets the length of the string.
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)

See also

• StringBuilder
• MarshalAsAttribute
• FileGet(Int32, Array, Int64, Boolean, Boolean)
• FilePut(Int32, Array, Int64, Boolean, Boolean)
• FileOpen(Int32, String, OpenMode, OpenAccess, OpenShare, Int32)
• Attributes (Visual Basic)