Assembla post ticket c#

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

namespace AssemblaIntegration
{
    class Helper
    {
        public static String PostTicket()
        {
            String responseFromServer = String.Empty;
            try
            {
                StringWriter TicketText = new StringWriter();
                XmlTextWriter TicketRequest = new XmlTextWriter(TicketText);

                TicketRequest.WriteStartElement("ticket");
                TicketRequest.WriteElementString("summary", "fldSummary");
                TicketRequest.WriteElementString("description", "fldFeedback");
                TicketRequest.WriteElementString("priority", "3");
                TicketRequest.WriteElementString("status", "New");
                TicketRequest.WriteElementString("permission_type", "2");
                TicketRequest.WriteElementString("created_on", DateTime.Now.ToString());
                TicketRequest.WriteEndElement();


                byte[] data = Encoding.UTF8.GetBytes(TicketText.ToString());
                IWebProxy objProxy;
                Uri uri = new Uri("https://www.assembla.com/spaces/<Space ID>/tickets");

                //.Net's implementation of expectations is horribly broken,
                //it ends up sending the body twice, buffering the whole
                //thing once on the client side. This works around the problem
                ServicePointManager.MaxServicePointIdleTime = 15000;
                ServicePointManager.Expect100Continue = false;

                //Create the URL and open a connection to it for both reading
                //and writing, keeping track of cookies
                CookieContainer cookies = new CookieContainer();
                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(uri);
                webRequest.CookieContainer = cookies;
                webRequest.Method = "POST";
                webRequest.PreAuthenticate = true;
                webRequest.AllowAutoRedirect = false;


                objProxy = WebRequest.GetSystemWebProxy();
                objProxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
                webRequest.Proxy = objProxy;

                //provide authentication information
                //Unfortunately, there's yet another bug in .Net in that it
                //ignore the PreAuthenticate header on the first request
                //(true, it may not know the type, but even if you use a
                //CredentialCache and tell it the type it still doesn't use it)
                //So in addition to setting the credentials manually (the Right Thing
                //to do) we also encode the authentication manually
                webRequest.Credentials = new NetworkCredential("UserName", "Password");

                webRequest.Headers["Authorization"] =
                    "Basic "
                    + Convert.ToBase64String(
                        Encoding.UTF8.GetBytes(
                            "UserName" + ":" + "Password"));

                webRequest.Accept = "application/xml";
                //The content-type is very important
                webRequest.ContentType = "application/xml";
                webRequest.AllowWriteStreamBuffering = true;
                webRequest.SendChunked = false;
                webRequest.ContentLength = data.Length;
                using (Stream stream = webRequest.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }

                Thread.Sleep(1000);
                HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());
                responseFromServer = reader.ReadToEnd();
                response.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return responseFromServer;
        }
    }
}