public void XoaLM(string MLM)
{
CafeEntities cf = new CafeEntities();
LOAIMON lm = new LOAIMON();
lm.MALOAIMON = MLM;
cf.LOAIMONs.Attach(lm);
cf.LOAIMONs.Remove(lm);
cf.SaveChanges();
}
public void ThemLM(string MLM, string TLM)
{
CafeEntities cf = new CafeEntities();
LOAIMON lm = new LOAIMON();
lm.MALOAIMON = MLM;
lm.TENLOAIMON = TLM;
cf.LOAIMONs.Add(lm);
cf.SaveChanges();
}