private void searchHumanDrug()
{
productsFeedSearched = RestUtils.getFeedByUri(new Uri(RestUtils.getAbsoluteUri(productsUri) + "start-page=" + (int)numericUpDown1.Value + "&page-size=" + (int)numericUpDown2.Value));
int max = productsFeedSearched.ElementExtensions.ReadElementExtensions<int>("totalResults", "http://a9.com/-/spec/opensearch/1.1/")[0];
int page = productsFeedSearched.ElementExtensions.ReadElementExtensions<int>("startIndex", "http://a9.com/-/spec/opensearch/1.1/")[0];
int itemPerPage = productsFeedSearched.ElementExtensions.ReadElementExtensions<int>("itemsPerPage", "http://a9.com/-/spec/opensearch/1.1/")[0];
productResultLabel.Text = ((page - 1) * itemPerPage + productsFeedSearched.Items.ToArray<SyndicationItem>().Length) + "/" + max;
productDataGridView.DataSource = RestUtils.getProductsBySyndicationFeed(productsFeedSearched);
}