Пример #1
0
        protected async Task LoadData()
        {
            // Try loading the results, show error message if necessary.
            WebResultsList webResults = null;
            Boolean        error      = false;

            try
            {
                webResults = await GetQueryResults();
            }
            catch
            {
                error = true;
            }

            // Hide the spinner, show the table
            LoadingIndicator.IsVisible = false;
            LoadingIndicator.IsRunning = false;
            DataTable.IsVisible        = true;

            if (error)
            {
                await ErrorAndPop("Error", "Error fetching results", "OK");
            }
            else if (webResults?.totalEstimatedMatches > 0)
            {
                values = webResults.value;
                DataTable.ItemsSource = values;
            }
            else
            {
                await ErrorAndPop("Error", "No results found", "OK");;
            }
        }
Пример #2
0
        async Task <WebResultsList> GetQueryResults()
        {
            // URL-encode the query term
            var queryString = System.Net.WebUtility.UrlEncode(queryTerm);

            // Here we encode the URL that will be used for the GET request to
            // find query results.  Its arguments are as follows:
            //
            // - [count=20] This sets the number of webpage objects returned at
            //   "$.webpages" in the JSON response.  Currently, the API aks for
            //   20 webpages in the response
            //
            // - [mkt=en-US] This sets the market where the results come from.
            //   Currently, the API looks for english results based in the
            //   United States.
            //
            // - [q=queryString] This sets the string queried using the Search
            //   API.
            //
            // - [responseFilter=Webpages] This filters the response to only
            //   include Webpage results.  This tag can take a comma seperated
            //   list of response types that you are looking for.  If left
            //   blank, all responses (webPages, News, Videos, etc) are
            //   returned.
            //
            // - [setLang=en] This sets the languge for user interface strings.
            //   To learn more about UI strings, check the Web Search API
            //   reference.
            //
            // - [API Reference] https://docs.microsoft.com/en-us/rest/api/cognitiveservices/bing-web-api-v5-reference
            string uri = AppConstants.BingWebSearchApiUrl + $"count=20&mkt=en-US&q={queryString}&responseFilter=Webpages&setLang=en";

            // Make the HTTP Request
            WebResultsList      webResults          = null;
            HttpResponseMessage httpResponseMessage = await searchApiClient.GetAsync(uri);

            var responseContentString = await httpResponseMessage.Content.ReadAsStringAsync();

            JObject json        = JObject.Parse(responseContentString);
            JToken  resultBlock = json.SelectToken("$.webPages");

            if (resultBlock != null)
            {
                webResults = JsonConvert.DeserializeObject <WebResultsList>(resultBlock.ToString());
            }
            return(webResults);
        }