title: How to refresh parent form when in child form is button clicked?
body: <p>then closing child form is working this command:</p>
  
  <pre><code>private void listView1_MouseDoubleClick(object sender, EventArgs e)
  {
      ListViewItem item = listView1.SelectedItems[0];
      string s = item.SubItems[6].Text;
      q = m;
      CommercialOfferEditProperties ob = new CommercialOfferEditProperties(s, q);
      ob.FormClosed += new FormClosedEventHandler(ob_FormClosed);
      ob.Show(); //show child
  }
  
  void ob_FormClosed(object sender, FormClosedEventArgs e)
  {
     some action
  }
  </code></pre>
  
  <p>But how to run action <code>ob_FormClosed</code> or run created new action, when in child form is button clicked?</p>