Char.ToLowerInvariant Method (Char)


Converts the value of a Unicode character to its lowercase equivalent using the casing rules of the invariant culture.

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

public static char ToLowerInvariant(
	char c


Type: System.Char

The Unicode character to convert.

Return Value

Type: System.Char

The lowercase equivalent of the c parameter, or the unchanged value of c, if c is already lowercase or not alphabetic.

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

Use String.ToLowerInvariant to convert a string to lowercase.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 4.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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