private void buttonMoveUp_Click(object sender, EventArgs e)
        {
            try
            {
                int index = listBox1.SelectedIndex;
                if (index != 0)
                {
                    Rule rule = (Rule)listBox1.Items[index];
                    listBox1.Items.RemoveAt(index);
                    index--;
                    listBox1.Items.Insert(index, rule);
                    listBox1.SelectedIndex = index;
                    List <Rule> r = new List <Rule>();
                    foreach (object ru in listBox1.Items)
                    {
                        r.Add((Rule)ru);
                    }

                    basicfirewall.InstanceGetRuleUpdates(r);
                }
            }
            catch { }
        }