private void LoadBarChartData() { List <PersonelStat> v = new List <PersonelStat>(); List <Personel> ls = Requettes.getAllPersonels(); for (int i = 0; i < ls.Count; i++) { v.Add(new PersonelStat(ls.ElementAt(i).nom, Requettes.nbApparenceJournal(ls.ElementAt(i).id))); } ((BarSeries)mcChart.Series[0]).ItemsSource = v; }