Shift a BigInteger value a specified number of bits to the left in CSharp

  /*from  w ww  . j a v a  2 s  .  c  o m*/
using System;
using System.Numerics;

public class Example
{
   public static void Main()
   {
        BigInteger number = BigInteger.Parse("-99999999999999999999999999999");
        for (int ctr = 0; ctr <= 16; ctr++)
        {
           BigInteger newNumber = number << ctr;
           Console.WriteLine(" {0,2} bits: {1,35} {2,30}", 
                             ctr, newNumber, newNumber.ToString("X"));
        }
   }
}