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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string line,line2;
            int counter = 0;
            int count2 = 0;
            GList l = new GList();
            GList k = new GList();
            StreamReader file = new StreamReader(@"c:\test1.csv");
            while ((line = file.ReadLine()) != null)
            {          
              
                l.Add(line);
                counter++;
            }
            file.Close();
            l.Show();

            Console.WriteLine("There were {0} lines.", counter);
            Console.WriteLine("---------------------------------------------");
            Console.WriteLine("---------------------------------------------");
            StreamReader file1 = new StreamReader(@"c:\test2.csv");
            while ((line1 = file1.ReadLine()) != null)
            {          
              
                k.Add(line);
                count2++;
            }
            file1.Close();
            k.Show();
            Console.WriteLine("There were {0} lines.", count2);
            
            Console.ReadLine(); 


           

        }
        
    }


    class GList
    {
        string[] array;

        public GList()
        {
            array = new string[0];
        }

        public int Count
        {
            get
            {
                return array.Length;
            }
        }

        public void Add(string value)
        {
            string[] buf = new string[array.Length];
            for (int i = 0; i < buf.Length; i++)
                buf[i] = array[i];
            array = new string[buf.Length + 1];
            for (int i = 0; i < buf.Length; i++)
                array[i] = buf[i];
            array[array.Length - 1] = value;
        }

        public void Show()
        {
            for (int i = 0; i < array.Length; i++)
                Console.WriteLine(array[i]);
        }

        public void Srav(string[] arr0, string[] arr1)
        {
            for (int i = 0; i < arr0.Length; i++)
            {
                if (arr0[i] == arr1[i])
                {
                    Console.WriteLine(arr0[i]);
                }

            }
        }

    }

}

public static void Srav(string[] arr0, string[] arr1)
{
...
}

...
GList.Srav(k,l);