Parse string to BigInteger with style settings in CSharp

  //w ww  . j a v  a2s.c  o  m
using System;
using System.Globalization;
using System.Numerics;

public class Example
{
   public static void Main()
   {
        BigInteger number; 

        number = BigInteger.Parse("   -6   ", NumberStyles.Integer);
        Console.WriteLine(number);

        number = BigInteger.Parse("6", NumberStyles.AllowHexSpecifier);
        Console.WriteLine(number);

        number = BigInteger.Parse("   -6  ", NumberStyles.AllowLeadingWhite | NumberStyles.AllowTrailingWhite);
        Console.WriteLine(number);

        number = BigInteger.Parse("   99999  ", NumberStyles.AllowLeadingSign);
        Console.WriteLine(number);
   }
}