private void AvailabilityQueryButton_Click(object sender, EventArgs e) { if (query == null) { query = new QueryForm(); query.MdiParent = this; query.Dock = DockStyle.Fill; query.Show(); query.FormClosed += Query_FormClosed; } else { query.Activate(); } }
private void Query_FormClosed(object sender, FormClosedEventArgs e) { query = null; }