private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { cont.count_dish = int.Parse(comboBoxCount.SelectedItem.ToString()); if (cont.count_dish == 0) { this.selectList.Rows[selectList.CurrentRow.Index].DefaultCellStyle.BackColor = Color.White; } else { if (!content_orders.list.ContainsKey(list_of_dishes.SearchDish((int)cont.id_dish))) { content_orders.list.Add(list_of_dishes.SearchDish((int)cont.id_dish), cont.count_dish); } cont.ListDihInOrder((int)cont.id_dish, cont.count_dish); } selectList.Visible = true; labelCount.Visible = false; comboBoxCount.Visible = false; }