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Uri.FromHex Method

April 12, 2014

Gets the decimal value of a hexadecimal digit.

Namespace:  System
Assembly:  System (in System.dll)
public static int FromHex(
	char digit
)

Parameters

digit
Type: System.Char
The hexadecimal digit (0-9, a-f, A-F) to convert.

Return Value

Type: System.Int32
An Int32 value that contains a number from 0 to 15 that corresponds to the specified hexadecimal digit.
ExceptionCondition
ArgumentException

digit is not a valid hexadecimal digit (0-9, a-f, A-F).

The FromHex method converts a character representing a hexadecimal digit (0-9, a-f, A-F) to its decimal value (0 to 15). If digit is not a valid hexadecimal digit, an ArgumentException exception is thrown.

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) {
    outputBlock.Text += testChar;
    outputBlock.Text += "is the hexadecimal representation of ";
    outputBlock.Text += Uri.FromHex(testChar);
    outputBlock.Text += "\n";
}
else {
    outputBlock.Text += testChar;
    outputBlock.Text += "is not a hexadecimal character\n";
}


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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