public void themLoaiNL(string malnl, string tenlnl)
{
LOAINL insert = new LOAINL();
insert.MALNL = malnl;
insert.TENLNL = tenlnl;
ff.LOAINLs.InsertOnSubmit(insert);
ff.SubmitChanges();
}
public void xoaLNL(string malnl)
{
LOAINL delete = ff.LOAINLs.Where(t => t.MALNL == malnl).FirstOrDefault();
if (delete != null)
{
ff.LOAINLs.DeleteOnSubmit(delete);
}
ff.SubmitChanges();
}
public void suaLoaiNL(string malnl, string tenlnl)
{
LOAINL update = ff.LOAINLs.Where(t => t.MALNL == malnl).FirstOrDefault();
if (update != null)
{
update.TENLNL = tenlnl;
}
ff.SubmitChanges();
}
