private void capnhatchitietphongToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            CTPhong ctp = new CTPhong();

            ctp.Show();
        }
 private void capnhatchitietphongToolStripMenuItem1_Click(object sender, EventArgs e)
 {
     CTPhong ctp = new CTPhong();
     ctp.Show();
 }