private void biểuĐồPhổĐiểmToolStripMenuItem_Click(object sender, EventArgs e) { if (!CheckExitsFrom("phodiemthi")) { PhoDiemThi fm = new PhoDiemThi(); fm.MdiParent = this; fm.Show(); } else ActiveChildForm("phodiemthi"); }
private void button13_Click(object sender, EventArgs e) { PhoDiemThi f = new PhoDiemThi(); f.Show(); }