private static void addPlayerToHistoric(PlayerDatas p)
        {
            byte[]       byteArray = Encoding.ASCII.GetBytes("PlayersHistoric.xml");
            MemoryStream stream    = new MemoryStream(byteArray);
            XElement     x         = new XElement("player");

            x.Add(new XAttribute("name", p.getName()));
            x.Add(new XAttribute("points", p.getPoints().ToString()));
            XElement xml = XElement.Load("PlayersHistoric.xml");

            xml.Add(x);
            xml.Save(stream);
        }
        private static void editPalyerHistoric(PlayerDatas player)
        {
            byte[]       byteArray = Encoding.ASCII.GetBytes("PlayersHistoric.xml");
            MemoryStream stream    = new MemoryStream(byteArray);
            XElement     xml       = XElement.Load("PlayersHistoric.xml");

            if (xml.HasElements)
            {
                XElement x = xml.Elements().Where(p => p.Attribute("name").Value.Equals(player.getName())).First();
                if (x != null)
                {
                    if ((int.Parse(x.Attribute("points").Value)) < player.getPoints())
                    {
                        x.Attribute("points").SetValue(player.getPoints().ToString());
                    }
                }
                xml.Save(stream);
            }
        }
        private static bool existThePlayer(PlayerDatas player)
        {
            byte[]       byteArray = Encoding.UTF8.GetBytes("PlayersHistoric.xml");
            MemoryStream stream    = new MemoryStream(byteArray);
            XElement     xml       = XElement.Load("PlayersHistoric.xml");

            if (xml.HasElements)
            {
                XElement x = xml.Elements().Where(p => p.Attribute("name").Value.Equals(player.getName())).First();
                if (x != null)
                {
                    return(true);
                }
                else
                {
                    return(false);
                }
            }
            else
            {
                return(false);
            }
        }