public CategoryModel()
        {
            if (PageSize < 1)
            {
                PageSize = 5;
            }

            Locales = new List <CategoryLocalizedModel>();
            AvailableCategoryTemplates = new List <SelectListItem>();
            AvailableCategories        = new List <SelectListItem>();
            AvailableDiscounts         = new List <SelectListItem>();
            SelectedDiscountIds        = new List <int>();

            SelectedCustomerRoleIds = new List <int>();
            AvailableCustomerRoles  = new List <SelectListItem>();

            SelectedStoreIds = new List <int>();
            AvailableStores  = new List <SelectListItem>();

            CategoryProductSearchModel = new CategoryProductSearchModel();
            // custom code start
            TierPriceSearchModel = new CustomTierPriceSearchModel();

            // custom code end
        }
        public CategoryModel()
        {
            if (PageSize < 1)
            {
                PageSize = 5;
            }

            Locales = new List <CategoryLocalizedModel>();
            AvailableCategoryTemplates = new List <SelectListItem>();
            AvailableCategories        = new List <SelectListItem>();

            SelectedCustomerRoleIds = new List <int>();
            AvailableCustomerRoles  = new List <SelectListItem>();

            SelectedStoreIds = new List <int>();
            AvailableStores  = new List <SelectListItem>();

            CategoryProductSearchModel = new CategoryProductSearchModel();
        }