public List<information> Showinf(int pageindex,int pagesize,out int totalcount,out int totalpage)
        {
            IQueryable<information> list = db.informations;
            
            totalcount = list.Count();//总条数
            totalpage = Convert.ToInt32(Math.Ceiling(totalcount * 1.0 / pagesize));//总页数
            //分页语句
            return list.OrderBy(m => m.Fid).Skip((pageindex - 1) * pagesize).Take(pagesize).ToList();

        }

public ActionResult Showinfor( int pageindex = 1, int pagesize = 1)
        {
            
            int totalcount;
            int totalpage;
            var qusy = Dal.Showinf( pageindex, pagesize, out totalcount, out totalpage);
            var list = new StaticPagedList<information>(qusy, pageindex, pagesize, totalcount);
            return View(list);
        }

@using WebApplication2.Models
@using PagedList;
@using PagedList.Mvc;
@model StaticPagedList<information>

@Html.PagedListPager(Model, pageindex=>Url.Action("Showinfor",new { 
   pageindex,
   Cid=Request["Cid"],
   Did=Request["Did"],
}))