multiconnection downloader in C#

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {

           

            List<FileDownloader> filewonloadersList = new List<FileDownloader>();
       System.Net.WebRequest req = System.Net.HttpWebRequest.Create("http://filetests.hosthop.com/Large_File_Downloads/100M.zip");
            req.Method = "HEAD";
            System.Net.WebResponse resp = req.GetResponse();
            int responseLength = int.Parse(resp.Headers.Get("Content-Length"));
            int downloadparts = responseLength / 5;
            for (int i = 0; i < responseLength; i = i + downloadparts)
            {
                FileDownloader filedownloadlistitem = new FileDownloader();
                filedownloadlistitem.Start = i;
                filedownloadlistitem.End = i + downloadparts;
                filedownloadlistitem.partnumber = filewonloadersList.Count + 1 ;
                filedownloadlistitem.Url = req.RequestUri.ToString();
                filewonloadersList.Add(filedownloadlistitem);
            }

                List<Thread> threadList = new List<Thread>();
                for (int i = filewonloadersList.Count-1; i >= 0; i--)
                {
                    ThreadStart ts = new ThreadStart(filewonloadersList[i].DoDownload);
                    
                    Thread run = new Thread(ts);
                    threadList.Add(run);
                    run.Start();
                ,,}


                //foreach (Thread aThread in threadList)
                //{
                //  //will wait 
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Threading;

namespace ConsoleApplication1
{
        public class FileDownloader{
            public int Start;
            public int End;
            public string Url;
            public object partnumber;
           public  void DoDownload(){

                // Create a New 'HttpWebRequest' object .
               HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(Url);
                myHttpWebRequest.AddRange(Start, End);
                //Console.WriteLine("Call AddRange("+Start+","+End+")");
                //Console.Write("Resulting Request Headers: ");
                //Console.WriteLine(myHttpWebRequest.Headers.ToString());

                // Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
                HttpWebResponse myHttpWebResponse=null;
                while (myHttpWebResponse == null)
                {
                    try
                    {
                        myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
                    }
                    catch { }
                }

                // Displays the headers in the response received
                //Console.Write("Resulting Response Headers: ");
               // Console.WriteLine(myHttpWebResponse.Headers.ToString());

                // Display the contents of the page to the console.
                Stream streamResponse = myHttpWebResponse.GetResponseStream();
                StreamReader streamRead = new StreamReader(streamResponse);
                Char[] readBuffer = new Char[256];
                int count = streamRead.Read(readBuffer, 0, 256);
               // Console.WriteLine("\nThe HTML contents of the page from "+Start+" to "+End+" characters are :\n  ");
                TextWriter write2file = new StreamWriter("c:\\testdownloadfile" + Convert.ToString(partnumber) + ".txt", true); 
               
                    while (count > 0)
                {
                    String outputData = new String(readBuffer, 0, count);
                    Console.WriteLine(outputData);
                    
                    write2file.Write(outputData);
                    
                    count = streamRead.Read(readBuffer, 0, 256);
                    Thread.Sleep(1);

                }
                // Release the response object resources.
                streamRead.Close();
                write2file.Close();            
                streamResponse.Close();
                myHttpWebResponse.Close();
                    
            }
        }
}