static void Main(string[] args)
{
    Console.WriteLine("f");``

Console.ReadLine();
string LoginSite(string url, string username, string password)

 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
   string cookie = "";

//this values will change depending on the website
 string values = "vb_login_username=" + username + "&vb_login_password="
+ password
                   + "&securitytoken=guest&"
                + "cookieuser=checked&"
                + "do=login";

  req.Method = "POST";
  req.ContentType = "application/x-www-form-urlencoded";
  req.ContentLength = values.Length;
  CookieContainer a = new CookieContainer();
  req.CookieContainer = a;
  System.Net.ServicePointManager.Expect100Continue = false; // prevents 417 error
 using (StreamWriter writer = new StreamWriter(req.GetRequestStream(),
  System.Text.Encoding.ASCII)) { writer.Write(values); }
  HttpWebResponse c = (HttpWebResponse)req.GetResponse();
  Stream ResponseStream = c.GetResponseStream();
 StreamReader LeerResult = new StreamReader(ResponseStream);
   string Source = LeerResult.ReadToEnd();


   foreach (Cookie cook in c.Cookies) { cookie = cookie + cook.ToString() + ";";    }
  return cookie