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Char.ToLower Method (Char)

Converts the value of a Unicode character to its lowercase equivalent.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
public static char ToLower(
	char c
)

Parameters

c
Type: System.Char

The Unicode character to convert.

Return Value

Type: System.Char
The lowercase equivalent of c, or the unchanged value of c, if c is already lowercase or not alphabetic.

Casing rules are obtained from the current culture.

Use String.ToLower to convert a string to lowercase.

Notes to Callers

As explained in Best Practices for Using Strings in the .NET Framework, we recommend that you avoid calling character-casing and string-casing methods that substitute default values. Instead, you should call methods that require parameters to be explicitly specified. To convert a character to lowercase by using the casing conventions of the current culture, call the ToLower(Char, CultureInfo) method overload with a value of CultureInfo.CurrentCulture for its culture parameter.

The following example demonstrates ToLower.

using System;
using System.Globalization;  // for CultureInfo 

public class ToLowerSample {
	public static void Main() {
		Console.WriteLine(Char.ToLower('A'));				// Output: "a"
	}
}

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, 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.

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