try { //System.GC.Collect(); HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL); request.Proxy = null; request.KeepAlive = false; request.Method = "GET"; request.ContentType = "application/json; charset=UTF-8"; request.AutomaticDecompression = DecompressionMethods.GZip; string Data = "{\"CorpId\":\"300014\"}"; //if (Data != "") //{ var type = request.GetType(); var currentMethod = type.GetProperty("CurrentMethod", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(request); var methodType = currentMethod.GetType(); methodType.GetField("ContentBodyNotAllowed", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(currentMethod, false); using (var streamWriter = new StreamWriter(request.GetRequestStream())) { streamWriter.Write(Data); } //} HttpWebResponse response = (HttpWebResponse)request.GetResponse(); Stream myResponseStream = response.GetResponseStream(); StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8); string retString = myStreamReader.ReadToEnd(); myStreamReader.Close(); myResponseStream.Close(); if (response != null) { response.Close(); } if (request != null) { request.Abort(); } return retString; } catch (Exception ex) { return ("ERROR:" + ex.Message + ":::" + ex.InnerException.Message); }