public void AddKM(string s, DateTime t1, DateTime t2)
{
PBL3 db = new PBL3();
//KhuyenMai kl = GetKMLast();
KhuyenMai k = new KhuyenMai();
//k.MaKM = kl.MaKM + 1;
k.TenKM = s;
k.TGBatDau = t1.Date;
k.TGKetThuc = t2.Date;
db.KhuyenMai.Add(k);
db.SaveChanges();
}
public void EditSach(Sach s)
{
PBL3 db = new PBL3();
Sach sedit = db.Sach.Find(s.MaSach);
sedit.TenSach = s.TenSach;
sedit.MaMH = s.MaMH;
sedit.MaNSX = s.MaNSX;
sedit.DonGia = s.DonGia;
sedit.GiaNhap = s.GiaNhap;
sedit.DVT = s.DVT;
sedit.SoLuongTon = s.SoLuongTon;
sedit.MoTa = s.MoTa;
db.SaveChanges();
}