关于webservice返回json

 [WebMethod]
        public List<PictureManager> LoadPictureOne()
        {
            dataDataContext context = new dataDataContext();
            List<PictureManager> list = new List<PictureManager>();
            try
            {
                List<PictureManager> li = context.PictureManager.Where(p => p.TypeId == 2 && p.IsShow == true).OrderByDescending(p => p.Id).Take(8).ToList();
                foreach (PictureManager item in li)
                {
                    PictureManager tb = new PictureManager();
                    tb.Id = item.Id;
                    tb.Name = item.Name;
                    tb.Picture = item.Picture;
                    tb.Price = item.Price;
                    tb.PriceInfo = item.PriceInfo;
                    tb.Remark = item.Remark;
                    list.Add(tb);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return list;
        }

//加载图片1
function LoadPictureOne() {
    $("#div1").html("");
    var htmlInfo = "";
    $.ajax({
        type: "post",
        contentType: "application/json;charset=utf-8",
        url: "../../service/backstageService.asmx/LoadPictureOne",
        data: "",
        dataType: "json",
        success: function (result) {
            var data = eval(result.d);
            $(data).each(function () {
                htmlInfo += "<div class=‘moxin‘><div ><img style=\"width:223px; height:217px;\" src=‘../../images/PictureManager/" + this.Picture + "‘ alt=‘" + this.Name + "‘ /></div><ul><li><p class=‘wenziqj‘>" + this.Price + "</p></li><li><p class=‘wenzish‘> " + this.PriceInfo + "</p><p class=‘wenzixia‘>" + this.Name + "</p></li><li class=‘tuliji‘   onclick=‘img_click(\"" + this.Name + "\")‘><img src=‘../../images/images/qiangoguanniu.png‘ style=‘cursor:pointer‘ /></li></ul></div>";
            });
            $("#div1").html($.trim(htmlInfo));
        },
        error: function (err) { layer.alert("加载图片出错", 5); }
    });
}

     [WebMethod]
        public string GetCount()
        {
            string json = string.Empty;
            try
            {
                using (dataDataContext context = new dataDataContext())
                {
                    if (context.tb_ApplicationAward.Count() != 0)
                    {
                        int CountM = Convert.ToInt32(context.tb_ApplicationAward.Sum<tb_ApplicationAward>(p => p.scheduleLength));
                        if (CountM > 2000)
                        {
                            CountM = 2000;
                        }
                        int CountPeople = context.tb_ApplicationAward.Count();
                        return "{‘CountM‘:" + CountM + ",‘CountPeople‘:" + CountPeople + "}";
                    }
                    return "{\"CountM\":" + 0 + ",\"CountPeople\":" + 0 + "}";
                }
            }
            catch (Exception)
            {
                return null;
            }
        }

function Loading() {
    $.ajax({
        type: "post",
        contentType: "application/json;charset=utf-8",
        url: "../../service/backstageService.asmx/GetCount",
        data: "{}",
        dataType: "json",
        success: function (js) {
            var obj = eval(‘(‘ + js.d + ‘)‘);
            var CountM = obj.CountM;//总米数
            count = CountM;
            var CountPeople = obj.CountPeople;//总人数
    //前台取得时候是用js.d来取