protected void TimerListBox_Tick(object sender, EventArgs e)
 {
     bindControls();
     UpdatePanelCarListBox.Update();
     UpdatePanelFleetListBox.Update();
     TimerListBox.Enabled = false;
 }
 protected void upUpdatePanel_PreRender(object sender, EventArgs e)
 {
     if (IsPostBack)
     {
         if (Request["__EVENTTARGET"] == UpdatePanelCarListBox.ClientID && Request.Form["__EVENTARGUMENT"] == "aaaa")
         {
             bindControls();
             UpdatePanelCarListBox.Update();
         }
     }
 }