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Char.IsLower Method (Char)

Indicates whether the specified Unicode character is categorized as a lowercase letter.

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

public static bool IsLower(
	char c
)

Parameters

c
Type: System.Char

A Unicode character.

Return Value

Type: System.Boolean
true if c is a lowercase letter; otherwise, false.

Valid lowercase letters are members of the following category in UnicodeCategory: LowercaseLetter.

The following code example demonstrates IsLower.

using System;

public class IsLowerSample {
	public static void Main() {
		char ch = 'a';

		Console.WriteLine(Char.IsLower(ch));				// Output: "True"
		Console.WriteLine(Char.IsLower("upperCase", 5));	// Output: "False"
	}
}

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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