private async void IParticipate_Click(object sender, RoutedEventArgs e)
 {
     string message = null;
     try {
         ParticipTicket Pt = new ParticipTicket(MenuItems.Id, App.MyProfile.IdProvider, 2/*remplacer par le nombre de participant en cour*/);
         ParticipTicketGest ptG = new ParticipTicketGest();
         ptG.sendParticipTicket(Pt);
         message = "Demande Envoyée";
     }
     catch
     {
         message = "Echec de la demande";
     }
     var dialog = new MessageDialog(message);
     dialog.Commands.Add(new UICommand("OK"));
     await dialog.ShowAsync();
     Frame.GoBack();
 }
 public async void sendParticipTicket(ParticipTicket sParTicket)
 {
     await App.MobileService.GetTable<ParticipTicket>().InsertAsync(sParTicket);
 }