internal class XMLManager : IManager
    {
        private const string Path = "contacts.xml";

        public void Create(Contacts contact)
        {
            TextReader reader = new StreamReader(Path);
            XElement ele = XElement.Load(reader);
            reader.Close();
            var element = addElement(contact.Id, contact.FirstName, contact.LastName, contact.Email, contact.Adress,
                contact.ZipCode, contact.Country);
            ele.Add(element);
            ele.Save(Path);
        }

        private XElement addElement(int param0, string param1, string param2, string param3, string param4,
            string param5, string param6)
        {
            var newXElement = new XElement("Contact");
            XElement e = new XElement("id", param0);
            newXElement.Add(e);
            e = new XElement("FirstName", param1);
            newXElement.Add(e);
            e = new XElement("LastName", param2);
            newXElement.Add(e);
            e = new XElement("Email", param3);
            newXElement.Add(e);
            e = new XElement("Adress", param4);
            newXElement.Add(e);
            e = new XElement("ZipCode", param5);
            newXElement.Add(e);
            e = new XElement("Country", param6);
            newXElement.Add(e);

            return newXElement;
        }