1000 Concurrent Web Request C#

static void Main(string[] args)
{

            ServicePointManager.DefaultConnectionLimit = 1000000;
            ServicePointManager.Expect100Continue = false;
            List<HttpWebRequest> request = CreateWebRequest(1000);
            TimeMultipleRequests(request);
}
static List<HttpWebRequest> CreateWebRequest(int no)
        {

            //reading an xml file from location which will be passed to WCF api as http post data
            var path = @"D:\PraveenUpadhyay\abc.xml";
            XmlDocument doc = new XmlDocument();
            doc.Load(path);

            List<HttpWebRequest> webRequest = new List<HttpWebRequest>();

            for (int i = 1; i <= no; i++)
            {
                var request = (HttpWebRequest)WebRequest.Create("http://localhost/TestService.svc/rest/agent/asset");
                request.Method = "POST"; request.ContentType = "application/xml;";
                var data = Encoding.ASCII.GetBytes(doc.InnerXml);
                request.ContentLength = data.Length;
                request.Timeout = 1000 * 60 * 10;
                //request.KeepAlive = true;

                using (var stream = request.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }

                webRequest.Add(request);
            }

            return webRequest;
        }
private static void TimeMultipleRequests(List<HttpWebRequest> requests)
        {
            var stopWatch = new Stopwatch();
            stopWatch.Start();

            foreach (var request in requests)
            {

                request.GetResponse();
            }

            stopWatch.Stop();
            var timeSpan = stopWatch.Elapsed;
            string s = String.Format("{0:00} hours, {1:00} minutes, {2:00} seconds, {3:00} milliseconds", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds, timeSpan.Milliseconds / 10);
            Console.WriteLine(s);
        }