This documentation is archived and is not being maintained.

Char.IsLower Method (Char)

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

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

static bool IsLower (
	wchar_t c
public static boolean IsLower (
	char c
public static function IsLower (
	c : char
) : boolean



A Unicode character.

Return Value

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 namespace System;
int main()
   char ch = 'a';
   Console::WriteLine( Char::IsLower( ch ) ); // Output: "True"
   Console::WriteLine( Char::IsLower(  "upperCase", 5 ) ); // Output: "False"

import System.*;

public class IsLowerSample
    public static void main(String[] args)
        char ch = 'a';
        Console.WriteLine(Char.IsLower(ch));                // Output: "True"
        Console.WriteLine(Char.IsLower("upperCase", 5));    // Output: "False"
    } //main
} //IsLowerSample

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0