private void btnMTra_Click(object sender, EventArgs e) { frmMuonSach m = new frmMuonSach(); this.Hide(); m.ShowDialog(); this.Show(); }
private void mượnSáchToolStripMenuItem_Click(object sender, EventArgs e) { frmMuonSach m = new frmMuonSach(); this.Hide(); m.ShowDialog(); this.Show(); }