private void BindProductItem() { ddlProductItem_ProductSizePicture.Items.Add(new ListItem("请选择", "-1")); ProductItem piBll = new ProductItem(); var dic = piBll.GetKeyValueByProductId(productId); if (dic == null) { return; } foreach (KeyValuePair <string, string> kvp in dic) { ddlProductItem_ProductSizePicture.Items.Add(new ListItem(kvp.Value, kvp.Key)); } }