public void xoa_khuyenmai(string id)
{
KHUYENMAI x = layOnekhuyenmai(id);
db.KHUYENMAIs.Remove(x);
db.SaveChanges();
}
public void them_khuyenmai(KHUYENMAI km)
{
string idkm = Content.RandomString(8);
km.idKhuyenMai = idkm;
db.KHUYENMAIs.Add(km);
db.SaveChanges();
}
public void sua_khuyenmai(KHUYENMAI km)
{
KHUYENMAI x = layOnekhuyenmai(km.idKhuyenMai);
x.MaKhuyenMai = km.MaKhuyenMai;
x.NgayBatDauKM = km.NgayBatDauKM;
x.NgayKetThucKM = km.NgayKetThucKM;
x.GiaTriKM = km.GiaTriKM;
x.ChiTietMoTaKM = km.ChiTietMoTaKM;
db.SaveChanges();
}
