private static List <CarItem> GetJson2ItemPri(JContainer json)
        {
            List <CarItem> list = new List <CarItem>();

            //Newtonsoft.Json.Linq.JContainer json = (Newtonsoft.Json.Linq.JContainer)Newtonsoft.Json.JsonConvert.DeserializeObject(JsonData);
            for (int i = 0; i < json.Count; i++)
            {
                JObject jo = (JObject)json[i];
                JToken  jk = jo["List"];
                CarItem ci = new CarItem()
                {
                    UrlI = jo["I"].ToString(),
                    N    = jo["N"].ToString(),
                    L    = jo["L"] == null ? "" : jo["L"].ToString()
                };
                ci.List = new List <CarItem>();
                int index = jk == null ? 0 : jk.Count();
                if (index > 0)
                {
                    ci.N += string.Format("({0})", index);
                    ci.List.AddRange(GetJson2ItemPri((JContainer)jk));//递归List中的数据
                }
                list.Add(ci);
                #region  完善的结果
                //foreach (JObject item in jk)
                //{
                //    JToken subjk = item["List"];
                //    CarItem subci = new CarItem()
                //    {
                //        UrlI = item["I"].ToString(),
                //        N = item["N"].ToString(),
                //        L = item["L"] == null ? "" : item["L"].ToString()
                //    };
                //    subci.List = new List<CarItem>();
                //    foreach (JObject subitem in subjk)
                //    {
                //        JToken subjk1 = subitem["List"];
                //        CarItem subci1 = new CarItem()
                //        {
                //            UrlI = subitem["I"].ToString(),
                //            N = subitem["N"].ToString(),
                //            L = item["L"] == null ? "" : item["L"].ToString()
                //        };
                //        subci.List.Add(subci1);

                //    }
                //    ci.List.Add(subci);
                //}
                //list.Add(ci);
                #endregion
            }
            return(list);
        }
        private static TreeNode GetJson2NodePri(JContainer json)
        {
            TreeNode tn = new TreeNode();

            for (int i = 0; i < json.Count; i++)
            {
                TreeNode td = new TreeNode();
                JObject  jo = (JObject)json[i];
                JToken   jk = jo["List"];
                CarItem  ci = new CarItem()
                {
                    UrlI = jo["I"].ToString(),
                    N    = jo["N"].ToString(),
                    L    = jo["L"] == null ? "" : jo["L"].ToString()
                };
                ci.List = new List <CarItem>();

                int index = jk == null ? 0 : jk.Count();
                if (index > 0)
                {
                    ci.List.AddRange(GetJson2ItemPri((JContainer)jk));
                    td = GetJson2NodePri((JContainer)jk);
                }
                td.Name = ci.N;
                td.Text = ci.DisplayName;
                td.Tag  = ci;
                if (!string.IsNullOrEmpty(ci.L))
                {
                    var treens = tn.Nodes.Find(ci.L, false);
                    if (treens.Length > 0)
                    {
                        //找到根
                        TreeNode tnd     = treens[0];
                        Font     subfont = new Font("微软雅黑", 9F, FontStyle.Regular, GraphicsUnit.Point, ((byte)(134)));
                        td.NodeFont  = subfont;
                        td.ForeColor = Color.Black;
                        tnd.Nodes.Add(td);
                    }
                    else
                    {
                        //没有找到就创建
                        TreeNode tnd = new TreeNode(ci.L);
                        tnd.Name = ci.L;
                        Font subfont = new Font("微软雅黑", 9F, FontStyle.Regular, GraphicsUnit.Point, ((byte)(134)));
                        td.NodeFont  = subfont;
                        td.ForeColor = Color.Black;
                        tnd.Nodes.Add(td);
                        tnd.Expand();
                        tn.Nodes.Add(tnd);
                    }
                }
                else
                {
                    Font subfont = new Font("微软雅黑", 9F, FontStyle.Regular, GraphicsUnit.Point, ((byte)(134)));
                    td.NodeFont  = subfont;
                    td.ForeColor = Color.BlueViolet;
                    tn.Nodes.Add(td);
                }
            }
            return(tn);
        }