private static FeedItemOperation newSiteLinkFeedItemAddOperation(
        SiteLinksDataHolder siteLinksData, String text, String url)
        {
            // Create the FeedItemAttributeValues for our text values.
              FeedItemAttributeValue linkTextAttributeValue = new FeedItemAttributeValue();
              linkTextAttributeValue.feedAttributeId = siteLinksData.LinkTextFeedAttributeId;
              linkTextAttributeValue.stringValue = text;
              FeedItemAttributeValue linkUrlAttributeValue = new FeedItemAttributeValue();
              linkUrlAttributeValue.feedAttributeId = siteLinksData.LinkUrlFeedAttributeId;
              linkUrlAttributeValue.stringValue = url;

              // Create the feed item and operation.
              FeedItem item = new FeedItem();
              item.feedId = siteLinksData.SiteLinksFeedId;
              item.attributeValues =
              new FeedItemAttributeValue[] {linkTextAttributeValue, linkUrlAttributeValue};
              FeedItemOperation operation = new FeedItemOperation();
              operation.operand = item;
              operation.@operator = Operator.ADD;
              return operation;
        }
        private static void createSiteLinksFeedItems(
        AdWordsUser user, SiteLinksDataHolder siteLinksData)
        {
            // Get the FeedItemService.
              FeedItemService feedItemService =
            (FeedItemService) user.GetService(AdWordsService.v201306.FeedItemService);

              // Create operations to add FeedItems.
              FeedItemOperation home =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "Home", "http://www.example.com");
              FeedItemOperation stores =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "Stores", "http://www.example.com/stores");
              FeedItemOperation onSale =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "On Sale", "http://www.example.com/sale");
              FeedItemOperation support =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "Support", "http://www.example.com/support");
              FeedItemOperation products =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "Products", "http://www.example.com/prods");
              FeedItemOperation aboutUs =
              newSiteLinkFeedItemAddOperation(siteLinksData,
              "About Us", "http://www.example.com/about");

              FeedItemOperation[] operations =
              new FeedItemOperation[] {home, stores, onSale, support, products, aboutUs};

              FeedItemReturnValue result = feedItemService.mutate(operations);
              foreach (FeedItem item in result.value) {
            Console.WriteLine("FeedItem with feedItemId {0} was added.", item.feedItemId);
            siteLinksData.SiteLinkFeedItemIds.Add(item.feedItemId);
              }
        }