public void ChinhSuaSL(string tensp, int SL)
{
DSGH dh = db.DSGHs.FirstOrDefault(s => s.TenSP.Equals(tensp));
dh.Số_Lượng = SL;
db.SubmitChanges();
}
public void XoaSPGH(string tensp)
{
DSGH e = db.DSGHs.FirstOrDefault(p => p.TenSP.Equals(tensp));
db.DSGHs.DeleteOnSubmit(e);
db.SubmitChanges();
}
public void ThemSLsanpham(string tensp)
{
DSGH dh = db.DSGHs.FirstOrDefault(s => s.TenSP.Equals(tensp));
dh.Số_Lượng = (dh.Số_Lượng + 1);
db.SubmitChanges();
}
public void ThemVaoDSGH(string tensp, int giasanpham, int soluong)
{
DSGH DS = new DSGH();
DS.TenSP = tensp;
DS.GiaBan = giasanpham;
DS.Số_Lượng = soluong;
da.ThemSPVB(DS);
}
public void ThemSPVB(DSGH DS)
{
db.DSGHs.InsertOnSubmit(DS);
db.SubmitChanges();
}