private void btn_sup_Click(object sender, EventArgs e)
{
vari = new Models.Variete();
vari._num = int.Parse(txt_num.Text);
vm.SupprimerVariete(vari);
RemplirComboBox();
}
private void btn_mod_Click(object sender, EventArgs e)
{
vari = new Models.Variete();
vari._num = int.Parse(txt_num.Text);
vari._nomVariete = txt_nom.Text;
vari._culture._numCulture = int.Parse(CB_num.Text);
vm.ModifierVariete(vari);
RemplirComboBox();
}