private void button17_Click(object sender, EventArgs e) { if (cc == null) { Button b = sender as Button; cc = new CheckedListControlCustom(); cc.Items.Add("One"); cc.Items.Add("Two"); cc.Items.Add("Three four five six seven eight nine ten"); cc.Items.Add("Four"); cc.FormClosed += FormClosed2; cc.PositionBelow(b, new Size(b.Width, 400)); cc.Show(); } else { cc.Close(); } }
private void FormClosed2(Object sender, FormClosedEventArgs e) { cc = null; }