protected override ActionResult DoWork()
        {
            // Заполняем ComboBox серверами.
              WixComboItem[] servers = (from s in Session.GetService<ISessionServerInfoExtension>().GetServerInfos()
                                select new WixComboItem(s.Name, s.Name)).ToArray();
              WixComboBox combo = new WixComboBox(Session, sessionProp.ControlProperty);
              combo.ClearItems();
              if (servers.Length > 0)
              {
            combo.AddItems(servers);
            combo.SelectedValue = servers[0].Value;
              }
              else
            combo.SelectedValue = "";

              return ActionResult.Success;
        }