SPListItemCollection.ListItemCollectionPosition Property

[ClientCallableAttribute]
public SPListItemCollectionPosition ListItemCollectionPosition { get; }

using System;
using Microsoft.SharePoint;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            using (SPSite site = new SPSite("http://localhost"))
            {
                using (SPWeb web = site.OpenWeb())
                {
                    SPList list = web.GetList("/lists/announcements");

                    SPQuery query = new SPQuery();
                    query.RowLimit = 3;

                    // Print list items in pages with query.RowLimit items per page.
                    int index = 1;
                    do
                    {
                        SPListItemCollection items = list.GetItems(query);
                        Console.WriteLine("\nPage: {0}  Items: {1}", index, items.Count);

                        foreach (SPListItem item in items)
                            Console.WriteLine(item.Title);

                        
                        query.ListItemCollectionPosition = items.ListItemCollectionPosition;
                        index++;

                    } // ListItemCollectionPosition is null for the last batch.
                    while (query.ListItemCollectionPosition != null); 
                }
            }
            Console.ReadLine();
        }
    }
}