private void inThẻDựThiToolStripMenuItem_Click(object sender, EventArgs e) { if (!CheckExitsFrom("FrmInTheDuThi")) { FrmInTheDuThi fm = new FrmInTheDuThi(); fm.MdiParent = this; fm.Show(); } else ActiveChildForm("FrmInTheDuThi"); }
private void button6_Click(object sender, EventArgs e) { FrmInTheDuThi FrmTheduthi = new FrmInTheDuThi(); FrmTheduthi.Show(); }