亚马逊产品广告API：仅从英国网站获取结果

Question

我是C＃的“亚马逊产品广告API”的新用户。我正在使用AWSECommerceService服务来搜索满足特定查询的书籍。

// prepare an ItemSearch request

ItemSearchRequest request = new ItemSearchRequest();
request.SearchIndex = "Books";
request.Title = "";
request.Author = "Ernest Hemingway";
request.ResponseGroup = new string[] { "Small" };

ItemSearch itemSearch = new ItemSearch();
itemSearch.Request = new ItemSearchRequest[] { request };
itemSearch.AWSAccessKeyId = accessKeyId;

// issue the ItemSearch request

ItemSearchResponse response = client.ItemSearch(itemSearch);

// write out the results
foreach (var item in response.Items[0].Item)
{
    Console.WriteLine(item.ItemAttributes.Title + "---" + item.ItemLinks[0].URL);
}

我的应用程序应仅从英国网站返回结果...我想我应该在某处设置Locale。有什么想法吗？