Paging with PagedList, is it efficient?

Question

I have been trying to implement paging for quite a while now and I found this tutorial for paging with MVC: ASP.NET MVC Paging Done Perfectly

Now, in this solution,

Answer 1

The linked tutorial looks odd, because it uses a List<Client>. This will indeed bring all the clients into memory and then page through that. Instead, you should look for methods that use IQueryable<T>, specifically Skip and Take, so paging should look like

IQueryable<Client> clients = repo.GetClients();          // lazy load - does nothing
List<Client> paged = clients.Skip(20).Take(10).ToList(); // execute final SQL

Depending on what mappers you use, you will find similar methods in EF, NHibernate, Linq-to-SQL etc