extjs查询并分页？

Question

我是这么做的
clgzRecordStore = new Ext.data.GroupingStore({
        proxy: new Ext.data.HttpProxy(
           {
               url: "DATA/Fhxx/clgz.aspx",
               method: "POST"
           }),
        reader: new Ext.data.JsonReader(
           {
               fields: clgzRecordfields,
               root: "data",
               id: "fhqdh",
               totalProperty: "totalCount"           }),
        //groupField: 'fcsj',
        sortInfo: { field: 'fcsj', direction: "DESC" }    });
//查询函数
function SearchClgzRecord() {
        var fcsjbegin = Ext.get('fcsj_begin').dom.value;
        var fcsjend = Ext.get('fcsj_end').dom.value;
        var sdzmccx = Ext.get('sdzmc_cx').dom.value;
        var zdzmccx = Ext.get('zdzmc_cx').dom.value;
        var clbhcx = Ext.get('clbh_cx').dom.value;//对应图中5个查询条件
        clgzRecordStore.reload
        ({
            params: { start: 0, limit: pageSize, fcsj1: fcsjbegin,fcsj2:fcsjend,sdzmc:sdzmccx,zdzmc:zdzmccx,clbh:clbhcx }
        });
    }clgz.aspx.cs文件string starts = Request.Form["start"];
        string limits = Request.Form["limit"];
        DateTime fcsj1 = Convert.ToDateTime(Request.Form["fcsj1"].ToString());
        DateTime fcsj2 = Convert.ToDateTime(Request.Form["fcsj2"].ToString());
        string sdzmc = Request.Form["sdzmc"];
        string zdzmc = Request.Form["zdzmc"];
        string clbh = Request.Form["clbh"];        if (starts != null && limits != null)
        {
            int start = int.Parse(starts);
            int limit = int.Parse(limits);
            JSON = bll.GetClgzxxInfos(start, limit,fcsj1,fcsj2,sdzmc,zdzmc,clbh);
        }
        else
        {
            Response.Write("{success:'false'}");
        }BLL层
GetClgzxxInfos(int start, int limit, DateTime fcsj1,DateTime fcsj2,string sdzmc,string zdzmc,string clbh)DAL层
//查询交易单信息并分页        public DataSet GetClgzInfo(int start, int limit)
        {
            try
            {
                ds = sqlhelper.GetProDataSet("proc_clgz");//用的存储过程，如何将这么多的参数传进去                
                return ds;
            }
            catch (Exception)
            {
                
                throw;
            }
        }谁给指导指导