public ArticleFamilyPricePartnersResponse Post(ArticleFamilyPricePartners request)
        {
            if (request.ArticleFamilyPricePartner.Id > 0)
              {
            Bm2s.Data.Common.BLL.Article.ArticleFamilyPricePartner item = Datas.Instance.DataStorage.ArticleFamilyPricePartners[request.ArticleFamilyPricePartner.Id];
            item.AddPrice = request.ArticleFamilyPricePartner.AddPrice;
            item.ArticleFamilyId = request.ArticleFamilyPricePartner.ArticleFamily.Id;
            item.EndingDate = request.ArticleFamilyPricePartner.EndingDate;
            item.Multiplier = Convert.ToDouble(request.ArticleFamilyPricePartner.Multiplier);
            item.PartnerId = request.ArticleFamilyPricePartner.Partner.Id;
            item.Price = Convert.ToDouble(request.ArticleFamilyPricePartner.Price);
            item.StartingDate = request.ArticleFamilyPricePartner.StartingDate;
            Datas.Instance.DataStorage.ArticleFamilyPricePartners[request.ArticleFamilyPricePartner.Id] = item;
              }
              else
              {
            Bm2s.Data.Common.BLL.Article.ArticleFamilyPricePartner item = new Data.Common.BLL.Article.ArticleFamilyPricePartner()
              {
            AddPrice = request.ArticleFamilyPricePartner.AddPrice,
            ArticleFamilyId = request.ArticleFamilyPricePartner.ArticleFamily.Id,
            EndingDate = request.ArticleFamilyPricePartner.EndingDate,
            Multiplier = Convert.ToDouble(request.ArticleFamilyPricePartner.Multiplier),
            PartnerId = request.ArticleFamilyPricePartner.Partner.Id,
            Price = Convert.ToDouble(request.ArticleFamilyPricePartner.Price),
            StartingDate = request.ArticleFamilyPricePartner.StartingDate
              };

            Datas.Instance.DataStorage.ArticleFamilyPricePartners.Add(item);
            request.ArticleFamilyPricePartner.Id = item.Id;
              }

              ArticleFamilyPricePartnersResponse response = new ArticleFamilyPricePartnersResponse();
              response.ArticleFamilyPricePartners.Add(request.ArticleFamilyPricePartner);
              return response;
        }
        public ArticleFamilyPricePartnersResponse Delete(ArticleFamilyPricePartners request)
        {
            Bm2s.Data.Common.BLL.Article.ArticleFamilyPricePartner item = Datas.Instance.DataStorage.ArticleFamilyPricePartners[request.ArticleFamilyPricePartner.Id];
              item.EndingDate = DateTime.Now;
              Datas.Instance.DataStorage.ArticleFamilyPricePartners[item.Id] = item;

              ArticleFamilyPricePartnersResponse response = new ArticleFamilyPricePartnersResponse();
              response.ArticleFamilyPricePartners.Add(request.ArticleFamilyPricePartner);
              return response;
        }
        public ArticleFamilyPricePartnersResponse Get(ArticleFamilyPricePartners request)
        {
            ArticleFamilyPricePartnersResponse response = new ArticleFamilyPricePartnersResponse();
              List<Bm2s.Data.Common.BLL.Article.ArticleFamilyPricePartner> items = new List<Data.Common.BLL.Article.ArticleFamilyPricePartner>();
              if (!request.Ids.Any())
              {
            items.AddRange(Datas.Instance.DataStorage.ArticleFamilyPricePartners.Where(item =>
              (request.PartnerId == 0 || item.PartnerId == request.PartnerId) &&
              (request.ArticleFamilyId == 0 || item.ArticleFamilyId == request.ArticleFamilyId) &&
              (!request.Date.HasValue || (request.Date >= item.StartingDate && (!item.EndingDate.HasValue || request.Date < item.EndingDate.Value)))
              ));
              }
              else
              {
            items.AddRange(Datas.Instance.DataStorage.ArticleFamilyPricePartners.Where(item => request.Ids.Contains(item.Id)));
              }

              var collection = (from item in items
                        select new Bm2s.Poco.Common.Article.ArticleFamilyPricePartner()
                        {
                          AddPrice = item.AddPrice,
                          ArticleFamily = new ArticleFamiliesService().Get(new ArticleFamilies() { Ids = new List<int>() { item.ArticleFamilyId } }).ArticleFamilies.FirstOrDefault(),
                          EndingDate = item.EndingDate,
                          Id = item.Id,
                          Multiplier = Convert.ToDecimal(item.Multiplier),
                          Partner = new PartnersService().Get(new Partners() { Ids = new List<int>() { item.PartnerId } }).Partners.FirstOrDefault(),
                          Price = Convert.ToDecimal(item.Price),
                          StartingDate = item.StartingDate
                        }).AsQueryable().OrderBy(request.Order, !request.DescendingOrder);

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

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

              return response;
        }