public Relative Get(int id)
        {
            XElement xRelative = _database.Element("relatives")
                                 ?.Elements("relative")
                                 .FirstOrDefault(el => el.Attribute("id")?.Value == id.ToString());

            Relative relative = new Relative()
            {
                Address      = xRelative.Element("address")?.Value,
                PhoneNumber  = xRelative.Element("phoneNumber")?.Value,
                RelativeRole = xRelative.Element("relativeRole")?.Value,
                PrisonerId   = int.Parse(xRelative.Attribute("prisonerId")?.Value ?? String.Empty),
                Name         = xRelative.Element("name")?.Value,
                Surname      = xRelative.Element("surname")?.Value,
                MiddleName   = xRelative.Element("middleName")?.Value,
            };

            return(relative);
        }
        public void Add(Relative relative)
        {
            int id = int.Parse(_database.Element("relatives")?.Attribute("lastId").Value ?? string.Empty) + 1;

            relative.Id = id;

            XElement xRelative = new XElement("relative",
                                              new XElement("name", relative.Name),
                                              new XElement("surname", relative.Surname),
                                              new XElement("middleName", relative.MiddleName),
                                              new XElement("address", relative.Address),
                                              new XElement("phoneNumber", relative.PhoneNumber),
                                              new XElement("relativeRole", relative.RelativeRole),
                                              new XAttribute("prisonerId", relative.PrisonerId),
                                              new XAttribute("id", id));

            _database.Element("relatives")?.Add(xRelative);
            _database.Element("relatives").Attribute("lastId").Value = id.ToString();
            _database.Save(_configuration.GetConnectionString("Database"));
        }