convert HTTP request code to HTTPS request code

I have got following code witch are sending xml file on HTTP protocol and getting response back as xml file from webserver and its working fine with HTTP protocol, but now i need to send 开发者_JS百科such a XML file to HTTPS protocol (not http) and need to get response as xml file from it. the code to send xml file and get response from HTTP is :

    string targetUri = "http://www.hostelspoint.com/xml/xml.php"; /*this will be like: "https://www.hostelspoint.com/xml/xml.php"*/
    System.Xml.XmlDocument reqDoc = new System.Xml.XmlDocument();
    reqDoc.Load(Server.MapPath("~\\getdetail.xml"));
    string formParameterName = "OTA_request";
    string xmlData = reqDoc.InnerXml;
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(targetUri);
    string sendString = formParameterName + "=" + HttpUtility.UrlEncode(xmlData);
    //string sendString =  HttpUtility.UrlEncode(xmlData);

    byte[] byteStream;
    byteStream = System.Text.Encoding.UTF8.GetBytes(sendString);
    request.Method = "POST";
    request.ContentType = "application/x-www-form-urlencoded";
    request.ContentLength = byteStream.LongLength;

    using (Stream writer = request.GetRequestStream())
    {
        writer.Write(byteStream, 0, (int)request.ContentLength);
        writer.Flush();
    }

    HttpWebResponse resp = (HttpWebResponse)request.GetResponse();
    string respStr = "";
    if (request.HaveResponse)
    {
        if (resp.StatusCode == HttpStatusCode.OK || resp.StatusCode == HttpStatusCode.Accepted)
        {
            StreamReader respReader = new StreamReader(resp.GetResponseStream());
            respStr = respReader.ReadToEnd(); // get the xml result in the string object  

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(respStr);
            Label1.Text = doc.InnerXml.ToString();


        }
    }  

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There shouldn't be much difference in your code, as HTTP or HTTPS differs only in transport level, not in application level. What may become a problem here is, if the server certificate used in the targetUri is trusted on your server. In this case the HTTPS identity cannot be verified.