ASP. Easyui--datagrid paging query of ASP. NET background data by Ajax request

JS Front desk Definition code for the DataGrid, as follows

Mygrid = $ (' #mytable '). DataGrid ({fit:true,//Auto SizeHeight: ' Auto ', Rownumbers:true,//Line numberFitcolumns:true, Collapsible:true,//whether it can be collapsed.LOADMSG: ' Data Loading ... ', Singleselect:true,//single-line selectionPagination:true //Show Pagination//columns: [[]]                }); //set up pagination controls$ ("#mytable"). DataGrid (' Getpager '). Pagination ({beforepagetext:"section", Afterpagetext:Page, Displaymsg:"The current {from}-{to} bar data has {total} data", PageSize:100, pagelist: [20, 30, 40, 50, 60, 70, 80, 90, 100], Onbeforerefresh:function() {}, Onrefresh:function(pagenumber, pageSize) {}, Onchangepagesize:function() {}, Onselectpage:function(pagenumber, pageSize) {getData (); }                });

JS Query request code, as follows:

                functionGetData () {varparam = ""; $(". Mynon"). each (function () {                        if($( This). attr ("checked") = = "Checked") param= param + "#" + $ ( This). attr ("id");                    }); if(param! = "") {                        varGrid = $ (' #mytable '); varoptions = Grid.datagrid (' Getpager '). Data ("pagination"). Options;//Options                        varPagenum = Options.pagenumber;//pages                        varTotal = Options.total;//Total                        varmax = Math.ceil (Total/options.pagesize); varpagesize = options.pagesize;//number of rows per page                        varSttime = $ ("#starttime"). ComboBox (' GetText '); varEttime = $ ("#endtime"). ComboBox (' GetText '); $.ajax ({type:"POST", URL:".. /frm/report.aspx/getreport ", Data:{' Begin ': ' + sttime + ' ', ' end ': ' + ettime + ' ', ' param ': ' + param + ' ', ' pagenum ': ' + pagenum + ' ', ' pagesize ': ' "+ page Size + "'}", ContentType:"Application/json; Charset=utf-8 ", DataType:"JSON", Async:false, Success:function(data) {varD = eval (' (' + DATA.D + ') '); Try {                                    $(' #mytable '). DataGrid ("LoadData"), D); } Catch(e) {alert (e); }}, Error:function(ERR) {alert ("Error code:" +err.status);                    }                        }); }                    Else{alert ("Please select the appropriate device!"); }                }              });

Asp. NET background code, such as:

[WebMethod] Public Static stringGetReport (stringBeginstringEndstringParamstringPagenum,stringpagesize) {            stringUserID = httpcontext.current.session["UserID"].            ToString (); string[] paras = param. Split ('#'); stringmeasures ="'";  for(inti =0; I < paras. Length; i++) {measures= measures +"', '"+Paras[i]; } measures= measures +"'"; stringBeginTime = begin +": xx"; stringEndTime = end +": xx"; intTotalCount =0; DataTable DT= DrWater.BLL.infoManager.GetHistoryPageInfo (UserID, BeginTime, endTime, measures, pagenum, pagesize, outtotalcount); List<json.dataItemJson> dataList =NewList<json.dataitemjson>(); if(dt! =NULL)            {                if(dt. Rows.Count >0)                {                     for(inti =0; i < dt. Rows.Count; i++) {Json.dataitemjson Item=NewJson.dataitemjson (); Item.status= dt. rows[i]["Status"].                        ToString ();                    Datalist.add (item); }}} Json.datalistjson Datalistjson=NewJson.datalistjson (); Datalistjson.total=TotalCount; Datalistjson.rows=dataList; JavaScriptSerializer JS=NewJavaScriptSerializer (); Js. Maxjsonlength=int. MaxValue;            stringstr =JS.            Serialize (Datalistjson); returnstr; }

After many debugs, the returned JSON string, although conforming to the data format standard of the Easyui DataGrid, has an error loading the data!

Fix the problem after using eval to convert the JSON string!

ASP. Easyui--datagrid paging query of ASP. NET background data by Ajax request