For some reason the following C# Console program always outputs:
32
False
wtf=0
What am I doing wrong?
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Globalization;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(Convert.ToUInt32("0x20", 16));
UInt32 wtf = 0;
Console.WriteLine(UInt32.TryParse("0x20",
NumberStyles.HexNumber, // I've tried also AllowHexSpecifier
CultureInfo.InvariantCulture, // I've also tried CurrentCulture
out wtf));
Console.WriteLine("wtf={0}", wtf);
}
}
}
4 Answers
You need to drop the "0x" prefix. Please see this blog entry
// stupid but effective way to improve the parsing
char[] _trim_hex = new char[] {'0','x'};
int temp;
if (int.TryParse(value.TrimStart(_trim_hex), NumberStyles.HexNumber, null, out temp))
{
// temp is good
}
Get rid of the leading "0x" in the string you're trying to parse.
See also In the example at the bottom of the page:
Attempted conversion of '0x8F8C' failed.
