String.ToLowerInvariant Method (System)

ToLowerInvariant Method

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Microsoft Visual Studio 2008/.NET Framework 3.5

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.NET Framework Class Library

String..::.ToLowerInvariant Method

Updated: October 2008

Returns a copy of this String object converted to lowercase using the casing rules of the invariant culture.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

Syntax

Visual Basic (Declaration)

Public Function ToLowerInvariant As String

Visual Basic (Usage)

Dim instance As String
Dim returnValue As String

returnValue = instance.ToLowerInvariant()

public string ToLowerInvariant()

Visual C++

public:
String^ ToLowerInvariant()

JScript

public function ToLowerInvariant() : String

Return Value

Type: System..::.String
A String object in lowercase.

Remarks

The invariant culture represents a culture that is culture-insensitive. It is associated with the English language but not with a specific country or region. For details, see Using the InvariantCulture Property.

If your application depends on the case of a string changing in a predictable way that is unaffected by the current culture, use the ToLowerInvariant method. The ToLowerInvariant method is equivalent to ToLower(CultureInfo.InvariantCulture).

Note:
This method does not modify the value of the current instance. Instead, it returns a new string in which all characters in the current instance are lowercased.

Security Considerations

If you need the lowercase or uppercase version of an operating system identifier, such as a file name, named pipe, or registry key, use the ToLowerInvariant or ToUpperInvariant methods.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

Change History

Date	History	Reason
October 2008	Expanded the Remarks section and added a note that the method returns a new String object.	Customer feedback.

Date

History

Reason

October 2008

Expanded the Remarks section and added a note that the method returns a new String object.

Customer feedback.