pastebin - collaborative debugging

using System;
using System.Text.RegularExpressions;
using System.Data;
using System.Collections;
namespace retest
{
    class Program
    {

        static void Main(string[] args)
        {
            System.IO.StreamReader sr = new System.IO.StreamReader("sample.txt");
            String fileContent = sr.ReadToEnd();
            sr.Close();
            String cp = @"\s+(-?[\d.]+)";
            Regex re = new Regex(@"^(\S+)"+cp+cp+cp+cp+cp+cp+cp+cp+".*", RegexOptions.Multiline);
            MatchCollection mc = re.Matches(fileContent);
            DataTable table = new DataTable();
            DataColumn CodeColumn = table.Columns.Add("Code", typeof(string));
            table.Columns.Add("Open", typeof(float));
            table.Columns.Add("High", typeof(float));
            table.Columns.Add("Low", typeof(float));
            table.Columns.Add("Close", typeof(float));
            table.Columns.Add("Change", typeof(float));
            table.Columns.Add("Trade", typeof(float));
            table.Columns.Add("Volume", typeof(float));
            table.Columns.Add("Value", typeof(float));
            table.Columns.Add("Line", typeof(string));
            foreach (Match m in mc)
            {
                table.Rows.Add(new object[] { m.Groups[1].Value, m.Groups[2].Value, m.Groups[3].Value, m.Groups[4].Value, m.Groups[5].Value, m.Groups[6].Value, m.Groups[7].Value, m.Groups[8].Value, m.Groups[9].Value, m.Groups[0].Value});
            }
            table.AcceptChanges();
            DataRow[] allRows;
            allRows = table.Select();
            DataRow[] foundRows;
            ArrayList list = new ArrayList();
            for (int ii = 0; ii < allRows.Length; ii++)
            {
                if (!list.Contains(allRows[ii]["Code"]))
                {
                    list.Add(allRows[ii]["Code"]);
                    string expression = "Code = '" + allRows[ii]["Code"] + "'";
                    foundRows = table.Select(expression);
                    if (foundRows.Length == 2)
                    {
                        Console.WriteLine(expression + ":");
                        Console.WriteLine("row 0:");
                        Console.WriteLine(foundRows[0]["Code"] + "," + foundRows[0]["Open"] + "," + foundRows[0]["High"] + "," + foundRows[0]["Low"] + "," + foundRows[0]["Close"] + "," + foundRows[0]["Change"] + "," + foundRows[0]["Trade"] + "," + foundRows[0]["Volume"] + "," + foundRows[0]["Value"] + "," + foundRows[0]["Line"]);
                        Console.WriteLine("row 1:");
                        Console.WriteLine(foundRows[1]["Code"] + "," + foundRows[1]["Open"] + "," + foundRows[1]["High"] + "," + foundRows[1]["Low"] + "," + foundRows[1]["Close"] + "," + foundRows[1]["Change"] + "," + foundRows[1]["Trade"] + "," + foundRows[1]["Volume"] + "," + foundRows[1]["Value"] + "," + foundRows[1]["Line"]);
                        Console.WriteLine("===================");
                    }
                }
            }
        }
    }
}