public void Load_DsHangHoa(string maNSX)
{
HangHoaBLL bLL = new HangHoaBLL();
dtgvDsHangHoa.DataSource = bLL.GetListHangHoaByMaNSX(maNSX);
foreach (DataGridViewColumn item in dtgvDsHangHoa.Columns)
{
item.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
}
}