protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
         BindTreeView();
         ProductCategoryController ch = new ProductCategoryController();
         ch.BuildTreeCat(cb_P_catID);
     }
 }
 private void BindDropDownList()
 {
     //Bind Category
     proCatController.BuildTreeCat(ddlCategory);
     proCatController.BuildCheckBoxListCat(lstOtherCat);
     //Bind Layout
     ddlGift.DataSource     = proColorController.SellectAllProductGift();
     ddlGift.DataValueField = "ID";
     ddlGift.DataTextField  = "ProductGift";
     ddlGift.DataBind();
     ddlGift.Items.Insert(0, new ListItem("-----Select gift type-----", "0"));
 }