private void inDanhSáchPhòngThiToolStripMenuItem_Click(object sender, EventArgs e) { if (!CheckExitsFrom("FrmDsPhongThi")) { FrmDsPhongThi fm = new FrmDsPhongThi(); fm.MdiParent = this; fm.Show(); } else ActiveChildForm("FrmDsPhongThi"); }
private void button2_Click(object sender, EventArgs e) { FrmDsPhongThi f = new FrmDsPhongThi(); f.Show(); }