protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            // management group connection is not available in constructor
            lMGName.Text = ManagementGroup.Name;
            lMGId.Text   = ManagementGroup.Id.ToString();
            lbConnectedUsers.Items.Clear();
            foreach (string user in ManagementGroup.GetConnectedUserNames())
            {
                lbConnectedUsers.Items.Add(user);
            }
        }