Catalog Repository.cs

private MultipleProductSearchResults GetMultipleProductSearchResults(BaseItem dataSource,
    CommerceSearchOptions productSearchOptions)
{
    Assert.ArgumentNotNull(productSearchOptions, "productSearchOptions");

    MultilistField searchesField = dataSource.Fields[Templates.ProductSearch.Fields.NamedSearches.ToString()];
    var searches = searchesField.GetItems();
    var productsSearchResults = new List<SearchResults>();

    foreach (var search in searches)
    {
        if (TemplateManager.GetTemplate(search).GetBaseTemplates().FirstOrDefault(t => t.ID == Templates.NamedSearch.ID) != null)
        {
            var productsSearchResult = _catalogManager.GetProductSearchResults(search, productSearchOptions);

            if (productsSearchResult != null)
            {
                productsSearchResult.NamedSearchItem = search;
                productsSearchResult.DisplayName = search[Templates.NamedSearch.Fields.Title.ToString()];
                productsSearchResults.Add(productsSearchResult);
            }
        }
        else if (TemplateManager.GetTemplate(search).GetBaseTemplates().FirstOrDefault(t => t.ID == Templates.SelectedProducts.ID) != null)
        {
            var itemCount = 0;
            var staticSearchList = new SearchResults
            {
                DisplayName = search[Templates.SelectedProducts.Fields.Title.ToString()],
                NamedSearchItem = search
            };

            MultilistField productListField = search.Fields[Templates.SelectedProducts.Fields.ProductList.ToString()];
            var productList = productListField.GetItems();

            foreach (var productItem in productList)
            {
                var catalogItemtype = productItem.ItemType();

                if (catalogItemtype == StorefrontConstants.ItemTypes.Category || catalogItemtype == StorefrontConstants.ItemTypes.Product)
                {
                    staticSearchList.SearchResultItems.Add(productItem);
                    itemCount++;
                }
            }

            staticSearchList.TotalItemCount = itemCount;
            staticSearchList.TotalPageCount = itemCount;
            productsSearchResults.Add(staticSearchList);
        }
    }

    return new MultipleProductSearchResults(productsSearchResults);
}