private void IndexForm_Load(object sender, EventArgs e)
{
VenteCont venteCont = new VenteCont();
venteCont.rechercheToutesVente();
dataGridView1.DataSource = null;
dataGridView1.DataSource = venteCont.ListVente;
}
private void button_appliquer_Click(object sender, EventArgs e)
{
List <Vente> listVentes = lireListVentes();
VenteCont venteCont = new VenteCont();
venteCont.ListVente = listVentes;
venteCont.ApplyVenteAndUpdateStock();
}