using System;
using System.Globalization;
using System.Numerics;
public class Example
{
public static void Main()
{
string[] hexStrings = { "80", "E293", "F9A2FF", "FFFFFFFF",
"0080", "00E293", "00F9A2FF", "00FFFFFFFF" };
BigInteger number = BigInteger.Zero;
foreach (string hexString in hexStrings)
{
if (BigInteger.TryParse(hexString, NumberStyles.AllowHexSpecifier,
null, out number))
Console.WriteLine("Converted 0x{0} to {1}.", hexString, number);
else
Console.WriteLine("Cannot convert '{0}' to a BigInteger.", hexString);
}
}
}