New Post: Invalid constructor invocation

    var xhr = new XmlHttpRequest();
    
    xhr.OnLoadFinish = function() {
        Console.Info(xhr.ResponseText);
    }; 

    xhr.Open("GET", "http://www.google.de/");
    xhr.Send(null);

public class XmlHttpRequest
    {

        public XmlHttpRequest()
        {
            
        }

        public dynamic OnLoadFinish;
        public dynamic OnSendFinish;

        public string MimeType { get { return _webrequest.MediaType; } set { _webrequest.MediaType = value; } }
        public object ResponseText { get; set; }

        private HttpWebRequest _webrequest;

        public void Open(string method, string url)
        {
            _webrequest = (HttpWebRequest) WebRequest.Create(url);
            _webrequest.Method = method;
        }

        public void Send(object data)
        {
            if(data == null)
            {
                var resp = (HttpWebResponse)_webrequest.GetResponse();
                using (var s = resp.GetResponseStream())
                {
                    ResponseText = new StreamReader(s).ReadToEnd();
                    if (OnLoadFinish != null) OnLoadFinish();  
                }
            }
            else
            {
                using (var s = _webrequest.GetRequestStream())
                {
                    var sw = new StreamWriter(s);
                    sw.Write(data);
                    sw.Flush();
                    if(OnSendFinish != null) OnSendFinish();
                }
            }
        }

    }