/// <summary>
/// constructor cho Form Chuyển bàn
/// </summary>
/// <param name="f"></param>
public BL_Ban(FrmChuyenBan f)
{
frmChuyenBan = f;
blHoaDon = new BL_HoaDon(f);
}
public BL_HoaDon(FrmChuyenBan f)
{
frmChuyenBan = f;
}