public void ReBindPageList() { DBLL.clsProductCategory ProductCategory = new DBLL.clsProductCategory(); DataTable dt = new DataTable(); dt = ProductCategory.sp_selectNormalTableOfAllByProductCategory(false); if (dt != null) { ProductList.Merge(dt); lvProductCategoryList.DataSource = ProductList; lvProductCategoryList.DataBind(); } else { lvProductCategoryList.DataSource = null; lvProductCategoryList.DataBind(); } }