Uri.FromHex Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets the decimal value of a hexadecimal digit.
Assembly: System (in System.dll)
Parameters
- digit
- Type: System.Char
The hexadecimal digit (0-9, a-f, A-F) to convert.
Return Value
Type: System.Int32An Int32 value that contains a number from 0 to 15 that corresponds to the specified hexadecimal digit.
| Exception | Condition |
|---|---|
| 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.
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