//联动
        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            DropDownList2.Items.Clear();
            RegionDC dc       = new RegionDC();
            string   sub_name = DropDownList1.SelectedValue;
            DataSet  ds       = null;

            if (sub_name.Equals("ALL"))
            {
                ds = dc.getEnableRegion();
            }
            else
            {
                ds = dc.getRegion_nameBySub_name(DropDownList1.SelectedValue);
            }
            if (ds != null)
            {
                DropDownList2.DataSource     = ds.Tables[0].DefaultView;
                DropDownList2.DataValueField = "region_name";
                DropDownList2.DataBind();
                DropDownList2.Items.Insert(0, "ALL");
            }
            else
            {
                PageUtil.showToast(this, "数据异常!");
            }
        }
 protected void Page_Load(object sender, EventArgs e)
 {
     Session["Local"] = "料架设定";
     if (!IsPostBack)
     {
         SubinventoryDC subdc = new SubinventoryDC();
         List <string>  list  = subdc.getAllSubinventory();
         DropDownList1.DataSource = list;
         DropDownList1.DataBind();
         DropDownList1.Items.Insert(0, "ALL");
         RegionDC dc = new RegionDC();
         DataSet  ds = dc.getEnableRegion();
         if (ds != null)
         {
             DropDownList2.DataSource     = ds.Tables[0].DefaultView;
             DropDownList2.DataValueField = "region_name";
             DropDownList2.DataBind();
             Region_key.DataSource     = ds.Tables[0].DefaultView;
             Region_key.DataValueField = "region_name";
             Region_key.DataBind();
             Region_key2.DataSource     = ds.Tables[0].DefaultView;
             Region_key2.DataValueField = "region_name";
             Region_key2.DataBind();
         }
         DropDownList2.Items.Insert(0, "ALL");
         Region_key.Items.Insert(0, "--------select--------");
     }
 }