Decimal to Binary

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Decimal_to_Binary
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = 1024;
            DecimalToBinary(8);
        }

        static void DecimalToBinary(int n)
        {
            int[] array = new int[(int)Math.Log(n, 2) + 1];
            var idx = array.Length - 1; // no reverse needed ;)
            while (n > 0)
            {
                var rem = n % 2;
                array[idx] = rem;
                n /= 2;
                idx--;
            }
            //Array.Reverse(array);
            for (int i = 0; i < array.Length; i++)
            {
                Console.Write(array[i]);
            }
            Console.ReadLine();
        }
    }
}
https://www.youtube.com/watch?v=4vNlt_EDw1Q