private void BindDropDown()
    {
        #region 绑定用户可管辖的管理片区
        Org_StaffBLL staff = new Org_StaffBLL((int)Session["UserID"]);
        tr_OrganizeCity.DataSource = staff.GetStaffOrganizeCity();

        if (tr_OrganizeCity.DataSource.Select("ID = 1").Length > 0)
        {
            tr_OrganizeCity.RootValue   = "0";
            tr_OrganizeCity.SelectValue = "1";
        }
        else
        {
            tr_OrganizeCity.RootValue   = new Addr_OrganizeCityBLL(staff.Model.OrganizeCity).Model.SuperID.ToString();
            tr_OrganizeCity.SelectValue = staff.Model.OrganizeCity.ToString();
        }
        #endregion

        select_Staff.SelectText  = staff.Model.RealName;
        select_Staff.SelectValue = staff.Model.ID.ToString();

        ddl_Transport.DataSource = DictionaryBLL.GetDicCollections("FNA_EvectionTransport");
        ddl_Transport.DataBind();
        ddl_Transport.Items.Insert(0, new ListItem("请选择...", "0"));

        ddl_Car.DataSource = Car_CarListBLL.GetCarListByOrganizeCity(staff.Model.OrganizeCity);
        ddl_Car.DataBind();
        ddl_Car.Items.Insert(0, new ListItem("请选择", "0"));
    }
    protected void tr_OrganizeCity_Selected(object sender, MCSControls.MCSWebControls.SelectedEventArgs e)
    {
        int city = int.Parse(tr_OrganizeCity.SelectValue);

        ddl_Car.DataSource = Car_CarListBLL.GetCarListByOrganizeCity(city).OrderBy(p => p.CarNo);
        ddl_Car.DataBind();
        ddl_Car.Items.Insert(0, new ListItem("请选择", "0"));
    }
    private void BindDropDown()
    {
        int organizecity = new Org_StaffBLL((int)Session["UserID"]).Model.OrganizeCity;

        ddl_CarID.DataTextField  = "CarNo";
        ddl_CarID.DataValueField = "ID";

        ddl_CarID.DataSource = Car_CarListBLL.GetCarListByOrganizeCity(organizecity).OrderBy(p => p.CarNo).ToList();
        ddl_CarID.DataBind();
        ddl_CarID.Items.Insert(0, new ListItem("请选择", "0"));
    }