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>)
             {
                 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 !=  || resultCount != )
                 {
                     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 = ;
             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 - ) * _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); } }
     }