private void SaveDeviceDetail(DeviceEditViewModel model, string guid)
        {
            foreach (var log in model.Logs)
            {
                Stream stream = log.OpenReadStream();
                using (StreamReader reader = new StreamReader(stream))
                {
                    string strxml = reader.ReadToEnd();

                    DeviceDetail deviceDetail = HelperXML.DESerializer <DeviceDetail>(strxml);
                    deviceDetail.DeviceGUID = guid;

                    _deviceRepository.AddDetail(deviceDetail);
                }
            }
        }