/* public bool CapNhapSoLuongHang() * { * try * { * DAL_Hang objdal = new DAL_Hang(); * return objdal.CapNhapSoLuongHang(); * } * catch * { * throw; * } * }*/ public bool Phuchoitheoma(string ma) { try { DAL_Hang objdal = new DAL_Hang(); return(objdal.phuchoitheoma(ma)); } catch { throw; } }