public void huy_HoaDon()
{
ListMatHang.Clear();
TongTien = "";
MaHD = "";
temp_MH_Mua = ListMatHang;
}
public void search()
{
ListMatHang.Clear();
ObservableCollection <MATHANG> list_mh = new ObservableCollection <MATHANG>(DataProvider.Ins.DB.MATHANGs);
int stt = 1;
foreach (var mh in list_mh)
{
if (duyet_MatHang(mh, txtMaMH, txtTenMH))
{
ListMatHangKho mh_kho = new ListMatHangKho(stt + "", mh.MaMH, mh.TenMH, get_TonKho(mh.MaMH));
ListMatHang.Add(mh_kho);
stt++;
}
}
}
