private void quảnLýMônHọcToolStripMenuItem_Click(object sender, EventArgs e) { frmMonHoc f = new frmMonHoc(); f.TopLevel = false; pnMain.Controls.Clear(); pnMain.Controls.Add(f); f.Show(); }
private void quảnLýMônHọcToolStripMenuItem_Click(object sender, EventArgs e) { frmMonHoc f = new frmMonHoc(); f.Show(); }