c# 后台分页 jqgrid

 /// <summary>
        /// 获取设备数量
        /// </summary>
        /// <param name="Organid">单位ID</param>
        /// <param name="Name">模糊查询单位名称</param>
        /// <returns></returns>
        public IList<Devicelist> GetDeviceList(string Organid, string Name, int startIndex, int resultCount, ref int recordCount)
        {
            string sqlwhere = " and 1=1";
            if (!string.IsNullOrEmpty(Name))
            {
                sqlwhere += " and  s.organ_name like '%" + Name + "%' ";
            }
            if (!string.IsNullOrEmpty(Organid))
            {
                sqlwhere += " and s.organ_id ='" + Organid + "'";
            }

            string sql = string.Format("select decode(t.device_type,1,'电脑','平板') device_typeName,t.device_type,t.device_limit,s.organ_name,t.organ_id from sys_organization s,t_device_countlimit t where t.organ_id=s.organ_id ");
            sql += sqlwhere+ "order by s.district_code";
            if (!DataAccess.IsOpened)
                DataAccess.OpenConnection();
            DataTable dt = DataAccess.GetDataTable(sql.ToString());
            if (DataAccess.IsOpened)
                DataAccess.CloseConnection();
            IList<Devicelist> list = new List<Devicelist>();
            if(dt.Rows.Count>0)
            {
                foreach(DataRow s in dt.Rows)
                {
                    Devicelist model = new Devicelist();
                    model.TypeName = s["device_typeName"].ToString();
                    model.DeviceType = s["device_type"].ToString();
                    model.limit = Convert.ToInt32(s["device_limit"]);
                    model.Organid = s["organ_id"].ToString();
                    model.OrganName = s["organ_name"].ToString();
                    list.Add(model);
                }
            }
            recordCount = list.Count;


                // 设置起始行和每页行数
                IList<Devicelist> resultList = new List<Devicelist>();
                if (startIndex != 0 || resultCount != 0)
                {
                    resultCount = recordCount > resultCount ? resultCount : recordCount;
                    for (int i = startIndex; i < resultCount; i++)
                    {
                        resultList.Add(list[i]);
                    }
                }
                else
                {
                    for (int i = startIndex; i < recordCount; i++)
                    {
                        resultList.Add(list[i]);
                    }
                }

                return resultList;

           
        }

 控制器

  /// <summary>
        /// 设备管理列表
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        public ActionResult List()
        {
            Devicelist model = JsonConvert.DeserializeObject<Devicelist>(Request.Form["queryJson"]);

            string organid = model.Organid;
            string OrganName = model.OrganName;
            // 分页参数
            int _RowsCount = 0;
            int currentPage = Convert.ToInt32(Request.Form["page"]); //页码
            int _PageSize = Convert.ToInt32(Request.Form["rows"]); //每页显示数

            IList<Devicelist> devices = _DeviceManagerRepository.GetDeviceList(organid,OrganName, (currentPage - 1) * _PageSize, _PageSize * currentPage, ref _RowsCount);

            IList<Devicelist> PageList = new List<Devicelist>();
            Devicelist listmodel = null;

            foreach(var s  in devices)
            {
                listmodel = new Devicelist();
                listmodel.Organid = s.Organid;
                listmodel.OrganName = s.OrganName;
                listmodel.TypeName = s.TypeName;
                listmodel.DeviceType = s.DeviceType;
                listmodel.limit = s.limit;
                PageList.Add(listmodel);
            }

            PagedResult<Devicelist> page = new PagedResult<Devicelist>
            {
                rows = PageList.ToList(),
                records = _RowsCount,
                page = currentPage,
                pagesize = _PageSize
            };

            return Json(page);
        }

PagedResult

   /// <summary>
    /// 分页结果
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class PagedResult<T>
    {
        /// <summary>
        /// ctor
        /// </summary>
        public PagedResult()
        {
            rows = new List<T>();
        }

        /// <summary>
        /// ctor with params
        /// </summary>
        /// <param name="pageIndex">当前页码</param>
        /// <param name="pageSize">每页显示数量</param>
        public PagedResult(int pageIndex, int pageSize)
        {
            page = pageIndex;
            pagesize = pageSize;
        }

        /// <summary>
        /// 总记录数
        /// </summary>
        public int records { set; get; }
        /// <summary>
        /// 当前页的所有项
        /// </summary>
        public IList<T> rows { set; get; }
        /// <summary>
        /// 当前页
        /// </summary>
        public int page { set; get; }
        /// <summary>
        /// 页大小
        /// </summary>
        public int pagesize { set; get; }
        /// <summary>
        /// 页总数
        /// </summary>
        public int total { get { return records.CeilingDivide(pagesize); } }
    }