Uri.IsHexDigit(Char) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Determines whether a specified character is a valid hexadecimal digit.
public:
static bool IsHexDigit(char character);public static bool IsHexDigit(char character);static member IsHexDigit : char -> boolPublic Shared Function IsHexDigit (character As Char) As BooleanParameters
- character
- Char
The character to validate.
Returns
true if the character is a valid hexadecimal digit; otherwise, false.
Examples
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))
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);
let testChar = 'e'
if Uri.IsHexDigit testChar then
printfn $"'{testChar}' is the hexadecimal representation of {Uri.FromHex testChar}"
else
printfn $"'{testChar}' is not a hexadecimal character"
let returnString = Uri.HexEscape testChar
printfn $"The hexadecimal value of '{testChar}' is {returnString}"
Dim testChar As Char = "e"c
If Uri.IsHexDigit(testChar) = True Then
Console.WriteLine("'{0}' is the hexadecimal representation of {1}", testChar, Uri.FromHex(testChar))
Else
Console.WriteLine("'{0}' is not a hexadecimal character", testChar)
End If
Dim returnString As String = Uri.HexEscape(testChar)
Console.WriteLine("The hexadecimal value of '{0}' is {1}", testChar, returnString)
Remarks
Hexadecimal digits are the digits 0 to 9 and the letters A-F or a-f.
