Question

I have a string which typically is in the format : "0xFF".
I’ll trim it since there is a chance of whitespace.

How do i convert that into hex and convert “34” to decimal?
I know about .Parse but does this support hex characters when the string is "0x123"?

Answer 1

You’ll have to strip the “0x” part, but this snippet works:

using System;
using System.Globalization;

public class StrToInt {
    public static void Main(string[] args) {
        string val = "FF";
        int num = Int32.Parse(val, NumberStyles.AllowHexSpecifier);
        Console.WriteLine(num);
    }
}