private void Init() { txtDay.Text = DateTime.Now.Day.ToString(); txtMonth.Text = DateTime.Now.Month.ToString(); txtYear.Text = DateTime.Now.Year.ToString(); label11.Text = label21.Text = Global.Tenkhachhang; label12.Text = Global.Diachi; txtTennhanvien.Text = APIs.GetTennhanvienByID(Global.nhanvienID); List <Thuoc> ItemsBuy = Global.lstItemBuy; for (int i = 0; i < ItemsBuy.Count; i++) { Thuoc sp = ItemsBuy[i]; ListViewItem item = new ListViewItem(); item.Text = (i + 1).ToString(); item.SubItems.Add(sp.Tenthuoc); item.SubItems.Add(sp.Donvitinh); item.SubItems.Add(sp.Soluong.ToString()); item.SubItems.Add(((float)sp.Dongia * 1000).ToString("N0")); item.SubItems.Add(((float)sp.Dongia * (int)sp.Soluong * 1000).ToString("N0")); listView1.Items.Add(item); } double sumMoney = 0; foreach (ListViewItem it in listView1.Items) { sumMoney += double.Parse(it.SubItems[5].Text); } txtTotal.Text = sumMoney.ToString("N0"); }