public HeaderStatusStepsResponse Post(HeaderStatusSteps request)
        {
            if (request.HeaderStatusStep.Id > 0)
              {
            Bm2s.Data.Common.BLL.Trade.HeaderStatusStep item = Datas.Instance.DataStorage.HeaderStatusSteps[request.HeaderStatusStep.Id];
            item.HeaderStatusChildId = request.HeaderStatusStep.HeaderStatusChild.Id;
            item.HeaderStatusParentId = request.HeaderStatusStep.HeaderStatusParent.Id;
            Datas.Instance.DataStorage.HeaderStatusSteps[request.HeaderStatusStep.Id] = item;
              }
              else
              {
            Bm2s.Data.Common.BLL.Trade.HeaderStatusStep item = new Data.Common.BLL.Trade.HeaderStatusStep()
            {
              HeaderStatusChildId = request.HeaderStatusStep.HeaderStatusChild.Id,
              HeaderStatusParentId = request.HeaderStatusStep.HeaderStatusParent.Id
            };

            Datas.Instance.DataStorage.HeaderStatusSteps.Add(item);
            request.HeaderStatusStep.Id = item.Id;
              }

              HeaderStatusStepsResponse response = new HeaderStatusStepsResponse();
              response.HeaderStatusSteps.Add(request.HeaderStatusStep);
              return response;
        }
        public HeaderStatusStepsResponse Delete(HeaderStatusSteps request)
        {
            Bm2s.Data.Common.BLL.Trade.HeaderStatusStep item = Datas.Instance.DataStorage.HeaderStatusSteps[request.HeaderStatusStep.Id];
              Datas.Instance.DataStorage.HeaderStatusSteps.Remove(item);

              HeaderStatusStepsResponse response = new HeaderStatusStepsResponse();
              response.HeaderStatusSteps.Add(request.HeaderStatusStep);
              return response;
        }
        public HeaderStatusStepsResponse Get(HeaderStatusSteps request)
        {
            HeaderStatusStepsResponse response = new HeaderStatusStepsResponse();
              List<Bm2s.Data.Common.BLL.Trade.HeaderStatusStep> items = new List<Data.Common.BLL.Trade.HeaderStatusStep>();
              if (!request.Ids.Any())
              {
            items.AddRange(Datas.Instance.DataStorage.HeaderStatusSteps.Where(item =>
              (request.HeaderStatusChildId == 0 || item.HeaderStatusChildId == request.HeaderStatusChildId) &&
              (request.HeaderStatusParentId == 0 || item.HeaderStatusParentId == request.HeaderStatusParentId)
              ));
              }
              else
              {
            items.AddRange(Datas.Instance.DataStorage.HeaderStatusSteps.Where(item => request.Ids.Contains(item.Id)));
              }

              var collection = (from item in items
                        select new Bm2s.Poco.Common.Trade.HeaderStatusStep()
                        {
                          HeaderStatusChild = new HeaderStatusesService().Get(new HeaderStatuses() { Ids = new List<int>() { item.HeaderStatusChildId } }).HeaderStatuses.FirstOrDefault(),
                          HeaderStatusParent = new HeaderStatusesService().Get(new HeaderStatuses() { Ids = new List<int>() { item.HeaderStatusParentId } }).HeaderStatuses.FirstOrDefault(),
                          Id = item.Id
                        }).AsQueryable().OrderBy(request.Order, !request.DescendingOrder);

              response.ItemsCount = collection.Count();
              if (request.PageSize > 0)
              {
            response.HeaderStatusSteps.AddRange(collection.Skip((request.CurrentPage - 1) * request.PageSize).Take(request.PageSize));
              }
              else
              {
            response.HeaderStatusSteps.AddRange(collection);
              }

              try
              {
            response.PagesCount = collection.Count() / response.HeaderStatusSteps.Count + (collection.Count() % response.HeaderStatusSteps.Count > 0 ? 1 : 0);
              }
              catch
              {
            response.PagesCount = 1;
              }

              return response;
        }