public UtilisationEntity()
        {
            InitializeComponent();
            var task = ParticipantHelper.SelectLoLPlayersAsync();

            task.Wait();
            List <Participant_NomCompte> data = task.Result;
            var tupleList = new List <Tuple <string, string> >();

            foreach (var p in data)
            {
                tupleList.Add(Tuple.Create(p.Participant.matricule, p.NomCompte));
            }

            dgComptes.ItemsSource = tupleList;
        }