public IActionResult Update([FromBody] Model.SettingsDbConnection settings)
        {
            if (settings != null && settings.DbName != null && settings.Host != null)
            {
                //открываем файл sql.json и сохраняем изменени

                WriteFile("sql.json", JsonConvert.SerializeObject(settings));

                //"Server=localhost;Database=MarketBotDb;Integrated Security = FALSE;USER ID=bot;PASSWORD=bot;Trusted_Connection = True;"

                string SqlConnection = "Server=" + settings.Host + ";Database=" + settings.DbName + ";Integrated Security = FALSE;Trusted_Connection = True;";

                WriteFile("connection.json", SqlConnection);


                if (TestConnection())
                {
                    return(Json("Успех!"));
                }

                else
                {
                    return(Json("Ошибка подключения"));
                }
            }

            else
            {
                return(Json("Ошибка ввода данных"));
            }
        }
        public IActionResult Index()
        {
            //"Server=localhost;Database=MarketBotDb;Integrated Security = FALSE;USER ID=bot;PASSWORD=bot;Trusted_Connection = True;"

            string sql = ReadFile("sql.json");

            if (sql == null || sql != null && sql == "")
            {
                Model.SettingsDbConnection settingsDb = new Model.SettingsDbConnection
                {
                    DbName   = "MarketBotDb",
                    Host     = "localhost",
                    UserName = "",
                    Password = ""
                };

                return(View(settingsDb));
            }

            else
            {
                var dbconnection = JsonConvert.DeserializeObject <Model.SettingsDbConnection>(sql);
                return(View(dbconnection));
            }
        }