private void btTra_sach_Click(object sender, EventArgs e)
{
for (int i = 0; i < ds_PM.count(); i++)
{
if (tb_MDG_tra.Text == ds_PM[i].Ma_doc_gia)
{
Phieutra b = new Phieutra(ds_PM[i].Ma_phieu_muon, ds_PM[i].Ma_doc_gia, ds_PM[i].Ngay_muon,
ds_PM[i].Ngay_hen_tra, DateTime.Now, ds_PM[i].Ma_sach_1, ds_PM[i].Ma_sach_2);
ds_PT.add(b);
PHIEUTRA pt = new PHIEUTRA();
pt.MAPHIEUMUON = ds_PM[i].Ma_phieu_muon;
pt.NGAYTRA = DateTime.Now;
a.PHIEUTRAs.InsertOnSubmit(pt);
a.SubmitChanges();
TimeSpan TG = b.Ngay_tra - b.Ngay_hen_tra;
if (TG.Days > 30)
{
MessageBox.Show("Tra qua han 1 thang\nTien phat: 20000VND");
}
break;
}
}
loadlistPT();
add_lvSach();
}
partial void UpdatePHIEUTRA(PHIEUTRA instance);
partial void DeletePHIEUTRA(PHIEUTRA instance);
partial void InsertPHIEUTRA(PHIEUTRA instance);
