Find longest sequence of zeroes in a binary representation of an integer

I am aware this problem has been asked before but in java e.g Printing longest sequence of zeroes. This is a similar problem but in C#. A brief explanation of the problem is to find the longest sequence of zeroes in a binary representation of an Integer. For instance, the Integer 529 in binary gives 1000010001 and the longest sequence of zeroes is 4. So far I have achieved this using the following code

using System.IO;
using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    public static int Solution(int N)
    {
        List occurenceCount = new List();
        int Counter=0,value;

        if(N == 0)
        {
            Console.WriteLine(0);
            return 0;
        }

        else{
            string binaryRep = Convert.ToString(N,2);

            // find the first occurence of 1 
            int FirstIndex = binaryRep.IndexOf("1");

            // find the last occurence of 1
            int LastIndex = binaryRep.LastIndexOf("1");

            for(int i = FirstIndex; i<LastIndex+1;)
            {

                value = i;

                while(binaryRep[value++] != '1' )
                {
                  Counter = Counter+1;
                }
                occurenceCount.Add(Counter);
                i= value;
               Counter=0;
            }
        return occurenceCount.Max();
        }
    }
    static void Main()
    {
       Console.WriteLine(Solution(1041));
    }
}

Brief description of the code: If the Integer passed is 0, then 0 is returned else the longest sequence. The convert.ToString() gives the binary representation. To improve the performance, I keep track of the index of the first 1 and the last index of 1 and use this in the for loop. In the while loop, once a 0 is encountered in between two 1's then a counter is incremented until a 1 is encountered and later on added to the List.
I would appreciate if any one can tell me how to improve on this.

Unless performance is somehow critical, you'd do far better by just making use of String.Split on '1' after getting a binary representation. Then you can search for the longest string in that array. The current implementation is very low level and hard to easily understand.

A programmer who sees the code as it is now would have to invest time to understand how it works, whereas relying on (even if slower) a few library calls can make an algorithm easier to understand for programmers, thus being of more value than the faster, low level algorithm. It's also faster to write such things and less likely to contain bugs because most of the actual work is done by the standard libraries, which are thoroughly tested by other programmers.

StackExchange Code Review Q#128080, answer score: 9