[WebMethod]
        public static string GetFollowInfo(string followId)
        {
            string followInfo = string.Empty;
            OrderFollow follow = null;
            if (!string.IsNullOrEmpty(followId))
            {
                Guid id = new Guid(followId);
                follow = followService.FindById(id);
            }
            if (follow != null)
            {
                followInfo = JsonConvert.SerializeObject(follow);
            }
            return followInfo;
        }

function edit(id) {
            if (id == "" || id == undefined) {
                return false;
            }
            $.ajax({
                url: "Customer_Order_Follow.aspx/GetFollowInfo",
                type: "POST",
                data: "{'followId':'" + id + "'}",
                contentType: "application/json;charset=utf-8",
                success: function (data) {
                    var result = eval(data.d);
                    alert(result); //这里显示出来的是正确的json串{"followId":"12344","followname":"abc"}
                },
                error: function (msg) {
                    alert("Error : " + msg);
                }
            })
        }