public void Writejson(int index, List <ConfigsItem> configs, string path)
        {
            //子集
            //Hashtable device = new Hashtable();
            //device.Add("id", "001111");
            //device.Add("name", "相机");
            //device.Add("ip", "192.168.1.1");


            GoProxyCongfigs lot = new GoProxyCongfigs(); //实体模型类

            //lot.Name = "lotname";
            //lot.Address = "wenzhou";
            lot.index   = index;
            lot.configs = configs; //注意是子集
            //lot.Doors = "4";

            //序列化
            string js1 = JsonConvert.SerializeObject(lot);
            //string js2 = JsonConvert.SerializeObject(device);

            //反序列化
            GoProxyCongfigs debc1 = JsonConvert.DeserializeObject <GoProxyCongfigs>(js1);
            //LotModel debc2 = JsonConvert.DeserializeObject<LotModel>(js2);

            //找到服务器物理路径
            //string serverAppPath = Request.PhysicalApplicationPath.ToString();
            //string serverAppPath = @"d:\";
            //构成配置文件路径
            //string con_file_path = @"" + serverAppPath + @"config.json";
            string con_file_path = path;

            if (!File.Exists(con_file_path))
            {
                //File.Create(con_file_path);
                File.Create(con_file_path).Close();
            }

            //把模型数据写到文件
            using (StreamWriter sw = new StreamWriter(con_file_path))
            {
                JsonSerializer serializer = new JsonSerializer();
                serializer.Converters.Add(new JavaScriptDateTimeConverter());
                serializer.NullValueHandling = NullValueHandling.Ignore;

                //构建Json.net的写入流
                JsonWriter writer = new JsonTextWriter(sw);
                //把模型数据序列化并写入Json.net的JsonWriter流中
                serializer.Serialize(writer, lot);
                //ser.Serialize(writer, ht);
                writer.Close();
                sw.Close();
            }
        }
        //读取json文件
        private void InitConfig()
        {
            configs.Clear();
            listBox1.Items.Clear();
            //读取文件
            string jsonfile = jsonconfigpath;

            if (!File.Exists(jsonfile))
            {
                //File.Create(con_file_path);
                int         index       = 0;
                ConfigsItem configsItem = new ConfigsItem();
                configsItem.server      = "your.domain or ip";//ip
                configsItem.server_port = 8880;
                configsItem.server_type = "http";
                configsItem.server_mode = "ws";
                configsItem.method      = "aes-256-cfb";
                configsItem.password    = "******";
                configs.Add(configsItem);
                Writejson(index, configs, jsonconfigpath);
                configs.Clear();
            }

            //把模型数据写到文件



            using (System.IO.StreamReader file = System.IO.File.OpenText(jsonfile))
            {
                string json = file.ReadToEnd();
                rb        = JsonConvert.DeserializeObject <GoProxyCongfigs>(json);
                mainIndex = rb.index;
                maxIndex  = rb.configs.Count() - 1;
                int n = 0;
                foreach (ConfigsItem e in rb.configs)
                {
                    if (n == mainIndex)
                    {
                        textBox3.Text  = e.server;//ip
                        textBox6.Text  = e.server_port.ToString();
                        comboBox2.Text = e.server_type;
                        comboBox1.Text = e.server_mode;
                        comboBox4.Text = e.method;
                        textBox7.Text  = e.password;
                    }
                    listBox1.Items.Add(e.server + ":" + e.server_port.ToString() + "\n");
                    // MessageBox.Show(n.ToString());
                    n++;
                    configs.Add(e);
                }
            }

            //Writejson(configs, @"config0000.json");
        }