/// <summary>
        /// Runs the code example.
        /// </summary>
        /// <param name="user">The AdWords user.</param>
        /// <param name="campaignId">Id of the campaign for which shopping channel
        /// is set.</param>
        public void Run(AdWordsUser user, long campaignId)
        {
            // Get the CampaignCriterionService.
            CampaignCriterionService campaignCriterionService =
                (CampaignCriterionService)user.GetService(
                    AdWordsService.v201406.CampaignCriterionService);

            // ProductSalesChannel is a fixed id criterion, with the possible values
            // defined here.
            // ONLINE: 200
            // LOCAL: 201
            ProductSalesChannel productSalesChannel = new ProductSalesChannel();

            productSalesChannel.id = 200;

            CampaignCriterion campaignCriterion = new CampaignCriterion();

            campaignCriterion.campaignId = campaignId;
            campaignCriterion.criterion  = productSalesChannel;

            // Create operation.
            CampaignCriterionOperation operation = new CampaignCriterionOperation();

            operation.operand   = campaignCriterion;
            operation.@operator = Operator.ADD;

            try {
                // Make the mutate request.
                CampaignCriterionReturnValue retVal = campaignCriterionService.mutate(
                    new CampaignCriterionOperation[] { operation });

                if (retVal != null && retVal.value != null)
                {
                    // Display campaign targets.
                    foreach (CampaignCriterion criterion in retVal.value)
                    {
                        Console.WriteLine("Campaign criteria of type '{0}' was set to campaign with" +
                                          " id = '{1}'.", criterion.criterion.CriterionType, criterion.campaignId);
                    }
                }
            } catch (Exception ex) {
                throw new System.ApplicationException("Failed to set shopping product channel.", ex);
            }
        }
    /// <summary>
    /// Runs the code example.
    /// </summary>
    /// <param name="user">The AdWords user.</param>
    /// <param name="campaignId">Id of the campaign for which shopping channel
    /// is set.</param>
    public void Run(AdWordsUser user, long campaignId) {
      // Get the CampaignCriterionService.
      CampaignCriterionService campaignCriterionService =
          (CampaignCriterionService) user.GetService(
              AdWordsService.v201406.CampaignCriterionService);

      // ProductSalesChannel is a fixed id criterion, with the possible values
      // defined here.
      // ONLINE: 200
      // LOCAL: 201
      ProductSalesChannel productSalesChannel = new ProductSalesChannel();
      productSalesChannel.id = 200;

      CampaignCriterion campaignCriterion = new CampaignCriterion();
      campaignCriterion.campaignId = campaignId;
      campaignCriterion.criterion = productSalesChannel;

      // Create operation.
      CampaignCriterionOperation operation = new CampaignCriterionOperation();
      operation.operand = campaignCriterion;
      operation.@operator = Operator.ADD;

      try {
        // Make the mutate request.
        CampaignCriterionReturnValue retVal = campaignCriterionService.mutate(
            new CampaignCriterionOperation[] { operation });

        if (retVal != null && retVal.value != null) {
          // Display campaign targets.
          foreach (CampaignCriterion criterion in retVal.value) {
            Console.WriteLine("Campaign criteria of type '{0}' was set to campaign with" +
                " id = '{1}'.", criterion.criterion.CriterionType, criterion.campaignId);
          }
        }
      } catch (Exception ex) {
        throw new System.ApplicationException("Failed to set shopping product channel.", ex);
      }
    }