public class Pager<T> where T : new()

    {

        private IEnumerable<T> _all;

        private IEnumerable<T> _current;

        public Pager()

            : this(, )

        {

        }

        public Pager(int pageIndex, int pageSize)

            : this(null, pageIndex, pageSize)

        {

        }

        public Pager(IEnumerable<T> items, int pageIndex = , int pageSize = )

        {

            PageIndex = pageIndex;

            PageSize = pageSize;

            if (items != null)

            {

                _all = items;

                var count = _all.Count();

                PageCount = count % pageSize >  ? (count / pageSize + ) : count / pageSize;

            }

        }

        public int PageIndex { get; set; }

        public int PageSize { get; private set; }

        public int PageCount

        {

            get;

            set;

        }

        public IEnumerable<T> Current

        {

            get

            {

                if (_all != null) _current = _all.Skip(PageIndex * PageSize).Take(PageSize);

                return _current;

            }

            set { _current = value; }

        }

    }