private void dgvMon_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
((DataGridViewComboBoxCell)dgvMon.Rows[e.RowIndex].Cells["colLoaiMon"]).DataSource = LoaiMonBUS.LayDanhSachTatCaLoaiMon();
((DataGridViewComboBoxCell)dgvMon.Rows[e.RowIndex].Cells["colLoaiMon"]).DisplayMember = "TenLoaiMon";
((DataGridViewComboBoxCell)dgvMon.Rows[e.RowIndex].Cells["colLoaiMon"]).ValueMember = "MaLoaiMon";
}
