.NET Framework Class Library
VBFixedStringAttribute Class

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

Inheritance Hierarchy
SystemObject
   SystemAttribute
    Microsoft.VisualBasicVBFixedStringAttribute

Namespace:   Microsoft.VisualBasic
Assembly:  Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)
Syntax
<[%$TOPIC/61dzkty7_en-us_VS_110_2_0_0_0_0%]([%$TOPIC/61dzkty7_en-us_VS_110_2_0_0_0_1%].Field, Inherited := False, AllowMultiple := False)> _
Public NotInheritable Class VBFixedStringAttribute _
	Inherits [%$TOPIC/61dzkty7_en-us_VS_110_2_0_0_0_2%]
[[%$TOPIC/61dzkty7_en-us_VS_110_2_0_1_0_0%]([%$TOPIC/61dzkty7_en-us_VS_110_2_0_1_0_1%].Field, Inherited = false, AllowMultiple = false)]
public sealed class VBFixedStringAttribute : [%$TOPIC/61dzkty7_en-us_VS_110_2_0_1_0_2%]
[[%$TOPIC/61dzkty7_en-us_VS_110_2_0_2_0_0%]([%$TOPIC/61dzkty7_en-us_VS_110_2_0_2_0_1%]::Field, Inherited = false, AllowMultiple = false)]
public ref class VBFixedStringAttribute sealed : public [%$TOPIC/61dzkty7_en-us_VS_110_2_0_2_0_2%]
[<[%$TOPIC/61dzkty7_en-us_VS_110_2_0_3_0_0%]>]
[<[%$TOPIC/61dzkty7_en-us_VS_110_2_0_3_0_1%]([%$TOPIC/61dzkty7_en-us_VS_110_2_0_3_0_2%].Field, Inherited = false, AllowMultiple = false)>]
type VBFixedStringAttribute =  
    class 
        inherit [%$TOPIC/61dzkty7_en-us_VS_110_2_0_3_0_3%] 
    end
public final class VBFixedStringAttribute extends [%$TOPIC/61dzkty7_en-us_VS_110_2_0_4_0_0%]

The VBFixedStringAttribute type exposes the following members.

Constructors
  NameDescription
Public method VBFixedStringAttributeInitializes the value of the SizeConst field.
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Properties
  NameDescription
Public property LengthGets the length of the string.
Public property TypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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Methods
  NameDescription
Public method EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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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.

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
NoteNote

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.

Version Information

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.