“/”应用程序中的服务器错误。

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行 1336:                string sql_ = "select * from (select row_number() over (order by " + sqlorder + ") as rowNum,* from info where cid=" + idsparam[1] + " and state>0 and tgstate>0)as a where rowNum=((select rowNum from (select row_number() over (order by " + sqlorder + ") as rowNum,* from info where cid=" + idsparam[1] + " and state>0 and tgstate>0)as b where id=" + idsparam[2] + ")-1)";
行 1337:                OleDbDataReader dr_ = con.DrSelect(sql_, null);
行 1338:                if (dr_.Read())
行 1339:                {
行 1340:                    string str_repeat = dr["repeats"].ToString();

[NullReferenceException: 未将对象引用设置到对象的实例。]
   jss_fc.JSSMethods.mt_topdowninfo(String tagename, OperateDB con, String[] param, String[] idsparam) in d:\website\lajs_netweb\App_Code\jss_fc\JSSMethods.cs:1338
   jss_fc.JSSMethods.TAGES_SINGLE(String tagename, OperateDB con, String[] param, String[] idsparam) in d:\website\lajs_netweb\App_Code\jss_fc\JSSMethods.cs:191
   info.Page_Load(Object sender, EventArgs e) in d:\website\lajs_netweb\info.aspx.cs:73
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +24
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +136
   System.Web.UI.Control.LoadRecursive() +97
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2523