public void ThemChamCong(string MaNV, string NgayLam, string Ca)
{
CHAMCONG cc = new CHAMCONG();
cc.MANHANVIEN = MaNV;
cc.NGAYLAM = DateTime.Parse(NgayLam);
cc.CA = Ca;
cf.CHAMCONGs.Add(cc);
cf.SaveChanges();
}
public void XoaChamCong(string MaNV, DateTime NgayLam, string Ca)
{
CHAMCONG cc = new CHAMCONG();
cc.MANHANVIEN = MaNV;
cc.NGAYLAM = NgayLam;
cc.CA = Ca;
cf.CHAMCONGs.Attach(cc);
cf.CHAMCONGs.Remove(cc);
cf.SaveChanges();
}
