private void mặcĐịnhToolStripMenuItem1_Click(object sender, EventArgs e)
{
dangnhap dn = new dangnhap();
dangky dk = new dangky();
tt_sinhvien ttsv = new tt_sinhvien();
tt_monhoc ttmh = new tt_monhoc();
tt_lop ttl = new tt_lop();
tt_khoa ttk = new tt_khoa();
tt_giaovien ttgv = new tt_giaovien();
tt_chinhsach ttcs = new tt_chinhsach();
tt_diem ttd = new tt_diem();
ql_admin qlad = new ql_admin();
ql_giaovien qlgv = new ql_giaovien();
ql_truongkhoa qltk = new ql_truongkhoa();
ql_users qlu = new ql_users();
qlu.Opacity = 1;
qltk.Opacity = 1;
qlgv.Opacity = 1;
qlad.Opacity = 1;
ttd.Opacity = 1;
ttcs.Opacity = 1;
ttgv.Opacity = 1;
ttk.Opacity = 1;
ttl.Opacity = 1;
ttmh.Opacity = 1;
ttsv.Opacity = 1;
dn.Opacity = 1;
dk.Opacity = 1;
this.Opacity = 1;
}
private void ql_gv_Click(object sender, EventArgs e)
{
ql_giaovien f = new ql_giaovien();
f.Show();
this.Close();
}