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Uri.IsHexDigit Method

Determines whether a specified character is a valid hexadecimal digit.

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

public static bool IsHexDigit (
	char character
)
public static boolean IsHexDigit (
	char character
)
public static function IsHexDigit (
	character : char
) : boolean
Not applicable.

Parameters

character

The character to validate.

Return Value

A Boolean value that is true if the character is a valid hexadecimal digit; otherwise false.

Hexadecimal digits are the digits 0 to 9 and the letters A-F or a-f.

The following example determines whether a character is a hexadecimal character and, if it is, writes the corresponding decimal value to the console.

char  testChar = 'e';
if (Uri.IsHexDigit(testChar) == true)
    Console.WriteLine("'{0}' is the hexadecimal representation of {1}", testChar, Uri.FromHex(testChar));
else 
    Console.WriteLine("'{0}' is not a hexadecimal character", testChar);

string returnString = Uri.HexEscape(testChar);
Console.WriteLine("The hexadecimal value of '{0}' is {1}", testChar, returnString);

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0
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