Conversion decimal to any base

using System;
using System.Collections;
namespace csstack
{
    class Class1
    {
        static void Main(string[] args)
        {
            int num, baseNum;
            string again = "y"; //do it again
            Console.WriteLine();
            while ((again == "y") || (again == "Y"))
            {
                Console.Write("Enter a decimal ynumber: ");
                num = Convert.ToInt32(Console.ReadLine());
                Console.Write("Enter a base: ");
                baseNum = Convert.ToInt32(Console.ReadLine());
                Console.Write(num + " converts to ");
                MulBase(num, baseNum);
                Console.WriteLine(" in Base-" + baseNum);
                Console.Write("\nDo it again? Anwer 'y' or 'N':\t");
                again = Console.ReadLine();

            }
            Console.WriteLine();
        }
        
        static void MulBase(int n, int b)
        {
            Stack digits = new Stack();
            do
            {
                digits.Push(n % b);
                n /= b;
            } while (n != 0);
            while (digits.Count > 0)
                Console.Write(digits.Pop()); 
        }
    }
}