ASP.NET MVC Page Numeration load by controller

using System.Web.Mvc;
using PJRamosWS.Models;
using System.Linq;
using System.Collections.Generic;

namespace PJRamosWS.Controllers
{
    public class ServicesController : Controller
    {
        PJRamosEntity context = new PJRamosEntity();
        //
        // GET: /Home/

        public ActionResult Index(int? Type, int? PageNo)
        {
            if (Type != null)
            {
                int max = 8;

                IEnumerable<Services> services = from s in context.Services
                                                 where s.ServiceType == Type
                                                 select s;

                int TotalServices = services.ToList().Count;

                List<Services> auxS = new List<Services>();

                if (TotalServices > max)
                {
                    if (PageNo == null)
                        PageNo = 1;
                    ViewBag.PageNo = PageNo;

                    double num = ((double)TotalServices) / (double)max;
                    int CertNum = (int)num;
                    if (CertNum != num)
                        CertNum++;

                    if (CertNum <= PageNo)
                        PageNo = CertNum;

                    ViewBag.TotalPages = CertNum;

                    int? start = (PageNo * max) - max;
                    int? count = PageNo * max;

                    double parse = ((double)PageNo * (double)max) - (double)TotalServices;
                    if (parse >= 0)
                        count -= (int)parse;

                    for (; start != count; start++)
                    {
                        if (services.ToList()[(int)start] == null)
                            break;
                        auxS.Add(services.ToList()[(int)start]);
                    }
                }
                else
                {
                    auxS = services.ToList();
                    //PageNo = 0;
                    ViewBag.PageNo = null;
                    ViewBag.TotalPages = 1;
                }

                var aux = from s in context.ServiceTypes
                          where s.id == Type
                          select s.Type;

                ViewBag.Type = aux.ToList()[0];
                ViewBag.TypeID = Type;

                return View("ServicesList", auxS);
            }
            else
            {

                IEnumerable<ServiceTypes> services = from s in context.ServiceTypes
                                                     select s;
                return View(services);

            }
        }
    }
}