使用jQuery UI Widgets的grid报错，Uncaught Error: jqxGrid: The data is still loading. When the data binding

错误：Uncaught Error: jqxGrid: The data is still loading. When the data binding is completed, the Grid raises the 'bindingcomplete' event. Call this function in the 'bindingcomplete' event handler.

在调用jQuery UI Widgets的grid的时候，从数据库提取数据，发现一个很狗血的问题，

var columns = new Array();
       var datafields = new Array();
       var fileds = data.data;
       if(fileds && fileds.length>0){
        for(var key in fileds[0]){  
        //某字段的列宽，列名和对应的字段名
        columns.push({text:key,datafield:key,align :'center',cellsalign : 'right'});
        //字段名和数据类型
        datafields.push({name:key});
        } 
       
       var source = {
           localdata: data.data,
           datatype: "array",
           datafields:datafields
       };
       }
       var dataAdapter = new $.jqx.dataAdapter(source);
       //加载数据，必须source在先，columns在后
       this_.data_preview.jqxGrid({

source:dataAdapter,
        columns: columns
       });

必须source参数在前，不然就报错