System.Net.WebRequest.GetRequestStream C# (CSharp) Method

        public virtual System.IO.Stream GetRequestStream() { throw null; }
        public virtual System.Threading.Tasks.Task<System.IO.Stream> GetRequestStreamAsync() { throw null; }

            public EasyWebRequest(string method, string userName, string password, string authID, string masterKey, string baseURL, string contraint)
            {
                request = WebRequest.Create(baseURL);
                request.ContentType = "text/xml";
                request.Credentials = new NetworkCredential(userName, password);
                request.Headers.Add("X-Parse-Application-Id: " + authID);
                request.Headers.Add("X-Parse-Master-Key: " + masterKey);

                if (method.Equals("GET") || method.Equals("POST"))
                    request.Method = method;
                else
                    throw new Exception("Invalid Method Type");

                string postData = contraint;
                byte[] byteArray = Encoding.UTF8.GetBytes(postData);

                request.ContentType = "application/x-www-form-urlencoded";

                request.ContentLength = byteArray.Length;

                dataStream = request.GetRequestStream();

                dataStream.Write(byteArray, 0, byteArray.Length);

                dataStream.Close();
 
            }