<error>

<error>

c#
    private static readonly string LoginDataPath = "login.json";

    public class LoginData
    {

        public string Login { get; set; }
        public string System { get; set; }
        public string Gateway { get; set; }
        public string Password { get; set; }

        public void Save()
        {
            var json = JsonConvert.SerializeObject(this, Formatting.Indented);
            File.WriteAllText(LoginDataPath, json);
        }

        public static LoginData Load()
        {
            var json = File.ReadAllText(LoginDataPath);
            var loginData = JsonConvert.DeserializeObject<LoginData>(json);
            return loginData;
        }
    }

c#
    private static readonly string LoginDataPath = "login.json";

    public class LoginData
    {

        public string Login { get; set; }
        public string System { get; set; }
        public string Gateway { get; set; }
        public string Password { get; set; }

        public void Save()
        {
            var json = JsonConvert.SerializeObject(this, Formatting.Indented);
            File.WriteAllText(LoginDataPath, json);
        }

        public static LoginData Load()
        {
            var json = File.ReadAllText(LoginDataPath);
            var loginData = JsonConvert.DeserializeObject<LoginData>(json);
            return loginData;
        }
    }