public ChiTietHD(int mahd)
{
ListPhong = new List <Phong>();
DataTable dt = ChiTietHDControl.layDSPhongCuaHD(mahd);
for (int i = 0; i < dt.Rows.Count; ++i)
{
Phong phong = new Phong(Convert.ToInt32(dt.Rows[i]["MaPhong"].ToString()));
ListPhong.Add(phong);
}
}
public void ThemPhong(int id)
{
Phong p = new Phong(id);
ListPhong.Add(p);
}