i have a string which contains hexadecimal values i want to know how to convert that string to hexadecimal using c#
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1Do you mean convert it into an integer? "hexidecimal" isn't a type.Mark Cidade– Mark Cidade2010-08-04 05:05:05 +00:00Commented Aug 4, 2010 at 5:05
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1There's no such thing as "hexadecimal values." Numbers are numbers, hex is just a representation. Ie: 0xff and 255 are the same numberNullUserException– NullUserException2010-08-04 05:05:41 +00:00Commented Aug 4, 2010 at 5:05
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2 Answers
There's several ways of doing this depending on how efficient you need it to be.
Convert.ToInt32(value, fromBase) // ie Convert.ToInt32("FF", 16) == 255
That is the easy way to convert to an Int32. You can use Byte, Int16, Int64, etc. If you need to convert to an array of bytes you can chew through the string 2 characters at a time parsing them into bytes.
If you need to do this in a fast loop or with large byte arrays, I think this class is probably the fastest way to do it in purely managed code. I'm always open to suggestions for how to improve it though.
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Given the following formats
10A
0x10A
0X10A
Perform the following.
public static int ParseHexadecimalInteger(string v)
{
var r = 0;
if (!string.IsNullOrEmpty(v))
{
var s = v.ToLower().Replace("0x", "");
var c = CultureInfo.CurrentCulture;
int.TryParse(s, NumberStyles.HexNumber, c, out r);
}
return r;
}
