private void BindingSource1_CurrentChanged(object sender, EventArgs e) { NATIONALITE v = (NATIONALITE)bsnat.Current; int x = v.idNation; bsComp.DataSource = Modele.CompositeurParNationalite(int.Parse(x.ToString())); dgvComp.DataSource = bsComp; dgvComp.Columns[0].HeaderText = "NOM"; dgvComp.Columns[1].HeaderText = "PRENOM"; dgvComp.Columns[2].HeaderText = "STYLE"; dgvComp.Columns[3].HeaderText = "Né le"; dgvComp.Columns[4].HeaderText = "Mort le"; dgvComp.Columns[5].HeaderText = "Informations"; }