public bool ThemPhieuNhap(PhieuNhap_DTO pn) { return(pnDAL.ThemPhieuNhap(pn)); }
//them phieu nhap public void ThemPhieuNhap(string ma, string ngaylap, string manv) { pn_dal.ThemPhieuNhap(ma, ngaylap, manv); }