private void UpdateParameters(Guid contentId, IList <Parameter> parameters, IUnitOfWork uow)
        {
            IParameterRepository paramRepo     = IoC.Container.Resolve <IParameterRepository>(uow);
            IList <Parameter>    currentParams = paramRepo.GetByParentId(contentId, ParameterParentType.ContentType);

            foreach (Parameter param in currentParams)
            {
                if (parameters.Any(item => item.Id == param.Id))
                {
                    continue;
                }
                paramRepo.Delete(param.Id.ToString());
            }

            foreach (Parameter param in currentParams)
            {
                if (!parameters.Any(item => item.Id == param.Id))
                {
                    continue;
                }
                Parameter modifiedParam = parameters.FirstOrDefault(item => item.Id == param.Id);
                param.UpdateFrom(modifiedParam);
                paramRepo.Update(param);
            }

            foreach (Parameter param in parameters)
            {
                if (currentParams.Any(item => item.Id == param.Id))
                {
                    continue;
                }
                //if (param.Id != null && param.Id != Guid.Empty) { continue; }
                Parameter newParam = new Parameter();
                newParam.CreateFrom(param);
                newParam.ParentType = ParameterParentType.ContentType;
                newParam.ParentId   = contentId;
                paramRepo.Add(newParam);
            }
        }