public HttpResponseMessage GetCustomerList(string key, string customergroupid, string accesslevelids)
        {
            var customergroups = GetListChild("", customergroupid);

            var list = _tblCustomerService.GetAllByFirstForUpload(key, "", customergroups, "", "", accesslevelids);

            var content = new StringContent(JsonConvert.SerializeObject(list), Encoding.UTF8, "application/json");

            return(new HttpResponseMessage()
            {
                StatusCode = HttpStatusCode.OK, Content = content, RequestMessage = Request
            });
        }