jQueryEasyui combobox加载不了数据，谁能帮我看下！

Question

我的目的是使用combobox加载ASHX文件的JSON，但不知道为什么总是加载不到数据。前台代码： <script type="text/javascript" language="javascript" >        $(function () {            $("#ddlGys").combobox({             url: '/Common/Helper.ashx',             mode:'remote',             valueFild: 'gys',             textFild:'gysbh'            });        });    </script>  <select id="ddlGys"  class="easyui-combobox"  /> 后台：  public List<Supplier> GetSupplier()        {            DataTable dt = GingKo.Code.GetDT("select top 20 gysbh,gys from wz_gys");            List<Supplier> suppliers = new List<Supplier>();            for (int i = 0; i < dt.Rows.Count; i++)            {                Supplier tmp = new Supplier();                tmp.gys = dt.Rows[i]["gys"].ToString();                tmp.gysbh = Convert.ToInt32(dt.Rows[i]["gysbh"].ToString());                suppliers.Add(tmp);            }            return suppliers;        }      //该方法为combobox提供JSON      public string GetSuppliersJSON()        {            JavaScriptSerializer serializer = new JavaScriptSerializer();            Supplier s = new Supplier();            List<Supplier> suppliers = s.GetAllSupplier();            string json = serializer.Serialize(suppliers);            return json;        }

Answer 1

楼上的赞同。