Getting the last item in Sitecore content data - lucene

Question

I am performing a search in which I have to get the 'ID' (field) of the last item stored in the sitecore/content/data/MyItem. The items stored in this folder are in 1000+ in number. I know Lucene search is by far efficient. I performed a Lucene Search to get the items based on the value like this:
using (IndexSearchContext searchContext = indx.CreateSearchContext())
{
var db = Sitecore.Context.Database;
CombinedQuery query = new CombinedQuery();
QueryBase catQuery = new FieldQuery("country", guidValueToSearch); //FieldName, FieldValue.
SearchHits results = searchContext.Search(catQuery); //Searching the content items by fields.
SearchResultCollection result = results.FetchResults(0, numOfArticles);
Here I am passing the guidValueToSearch for the items needs to be fetched for "country" field value. But I want to get the last item in the folder. How should I achieve this?

Answer 1

If you know you need the last childitem of /sitecore/content/data/MyItem, you could also use a more simple approach and get the parentItem and then retrieve the last child:
Item myItem = Sitecore.Context.Database.GetItem("/sitecore/content/data/MyItem");
Item lastItem = myItem.Children.Last();
The same could be done with Descendants instead of Children.

Answer 2

If you did want to implement it using search then have a look at this answer which explains how to extend the IndexSearchContext to have methods that accept a Lucene.Net.Search.Sort. You can then pass in the Sitecore.Search.BuiltinFields.Created or Sitecore.Search.BuiltinFields.Updated field (depending on what you are after).