Uri.IsHexDigit Method (Char)


Determines whether a specified character is a valid hexadecimal digit.

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

public static bool IsHexDigit(
	char character


Type: System.Char

The character to validate.

Return Value

Type: System.Boolean

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));
    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);

.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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