private void dspbToolStripMenuItem_Click(object sender, EventArgs e)
{
Phongban phongban = new Phongban();
phongban.capquyen(tk, quyen);
xulymenu2(phongban);
}
private void button7_Click(object sender, EventArgs e)
{
GDchinh2 gd = System.Windows.Forms.Application.OpenForms["GDchinh2"] as GDchinh2;
Phongban pb = new Phongban();
pb.capquyen(tk, quyen);
gd.xulymenu2(pb);
}