Posting Form Data to Remote Site using HttpWebRequest

string oid = "364826B3-7D29-4C2E-9568-C318C2B45F0C";
string retURL = CurrentPage.Url;
string remoteUrl = https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8";
string name = Request.Form["name"];
string email = Request.Form["email"];

// Setup the POST data
string poststring = String.Format("oid={0}&retURL={1}&name={2}&email={3}", oid, retURL, name, email);
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(remoteUrl);

httpRequest.Method = "POST";
httpRequest.ContentType = "application/x-www-form-urlencoded";

// Convert the post string to a byte array
byte[] bytedata = System.Text.Encoding.UTF8.GetBytes(poststring);
httpRequest.ContentLength = bytedata.Length;

// Create the stream
Stream requestStream = httpRequest.GetRequestStream();
requestStream.Write(bytedata, 0, bytedata.Length);
requestStream.Close();

// Get the response from remote server
HttpWebResponse httpWebResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream responseStream = httpWebResponse.GetResponseStream();

System.Text.StringBuilder sb = new System.Text.StringBuilder();
using (StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.UTF8))
{
    string line;
    while ((line = reader.ReadLine()) != null)
    {
        sb.Append(line);
    }
}

string serverResponse = sb.ToString();