private void button2_Click(object sender, EventArgs e) { frmSuaNgonNgu frm = new frmSuaNgonNgu(); frm.ShowDialog(); }
private void xoaSachToolStripButton_Click(object sender, EventArgs e) { frmSuaNgonNgu frmQLNN = new frmSuaNgonNgu(); frmQLNN.ShowDialog(); }