Uri.FromHex Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets the decimal value of a hexadecimal digit.
Namespace: System
Assembly: System (in System.dll)
Syntax
'Declaration
Public Shared Function FromHex ( _
digit As Char _
) As Integer
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.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentException | digit is not a valid hexadecimal digit (0-9, a-f, A-F). |
Remarks
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.
Examples
The following example determines whether a character is a hexadecimal character and, if it is, writes the corresponding decimal value to the console.
Dim testChar As Char = "e"
If Uri.IsHexDigit(testChar) = True Then
outputBlock.Text &= testChar
outputBlock.Text &= "is the hexadecimal representation of "
outputBlock.Text &= Uri.FromHex(testChar)
outputBlock.Text &= vbCrLf
Else
outputBlock.Text &= testChar
outputBlock.Text &= "is not a hexadecimal character"
outputBlock.Text &= vbCrLf
End If
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";
}
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);
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.