using System;

using System.Net;

​

public class Program

{

    public static void Main(string[] args)

    {

        var ip1 = IPAddress.Parse("192.168.0.1");

        var ip2 = IPAddress.Parse("192.168.0.1");

        if( ip1 == ip2 )

        {

            Console.WriteLine("Same IP");

        }

        else

        {

            Console.WriteLine("Different IP!");

        }

    }

}

​