private void chiaPhòngThiToolStripMenuItem_Click(object sender, EventArgs e) { if (!CheckExitsFrom("Chiaphongthi")) { Chiaphongthi fm = new Chiaphongthi(); fm.MdiParent = this; fm.Show(); } else ActiveChildForm("Chiaphongthi"); }
private void button10_Click_1(object sender, EventArgs e) { Chiaphongthi f = new Chiaphongthi(); f.Show(); }