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FixedLengthString Class

Note: This API is now obsolete.

Emulates the behavior of a Visual Basic 6.0 fixed-length string.


Namespace:  Microsoft.VisualBasic.Compatibility.VB6
Assembly:  Microsoft.VisualBasic.Compatibility (in Microsoft.VisualBasic.Compatibility.dll)

[ObsoleteAttribute("Microsoft.VisualBasic.Compatibility.* classes are obsolete and supported within 32 bit processes only. http://go.microsoft.com/fwlink/?linkid=160862")]
public class FixedLengthString

The FixedLengthString type exposes the following members.

Public methodFixedLengthString(Int32)Initializes a new instance of the FixedLengthString class, specifying the length.
Public methodFixedLengthString(Int32, String)Initializes a new instance of the FixedLengthString class, specifying the length and the initial value.

Public propertyValueGets or sets the contents of a FixedLengthString.

Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringConverts a FixedLengthString to a String. (Overrides Object.ToString().)

Protected fieldm_nMaxCharsInfrastructure. Stores the length of a FixedLengthString.
Protected fieldm_strValueInfrastructure. Stores the value of a FixedLengthString.

In Visual Basic 6.0, a String could be declared with a fixed length. In Visual Basic, fixed-length strings are no longer supported and a new String is allocated every time the length of the String is changed.

The FixedLengthString class can be used to emulate the behavior of a Visual Basic 6.0 string, which enables you to declare a string with a fixed length. A FixedLengthString cannot be converted to a String; you must either reference the Value property or call the ToString method to convert the type.


Functions and objects in the Microsoft.VisualBasic.Compatibility.VB6 namespace are provided for use by the tools for upgrading from Visual Basic 6.0 to Visual Basic 2008. In most cases, these functions and objects duplicate functionality that you can find in other namespaces in the .NET Framework. They are necessary only when the Visual Basic 6.0 code model differs significantly from the .NET Framework implementation.

The following example demonstrates how to declare and use a FixedLengthString.

Private Sub DemoFixedLengthString()
    ' Declare a string that has a length of 7 characters and assign the
    ' initial string. The additional 5 positions will be padded with
    ' spaces.
    Dim fixedString As New FixedLengthString(7, "He")
    ' Display the string in a message box.
    ' Assign a new value to the string.
    fixedString.Value = "Hello World"
    ' Display again. Note that only the first 7 characters are shown.
End Sub

.NET Framework

Supported in: 3.5, 3.0, 2.0
Obsolete (compiler warning) in 4.6
Obsolete (compiler warning) in 4.5
Obsolete (compiler warning) in 4.5.1
Obsolete (compiler warning) in 4.5.2
Obsolete (compiler warning) in 4

.NET Framework Client Profile

Obsolete (compiler warning) in 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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