/// <summary>
/// Function to retrieve the latests news. With a successful response, it will call ParseNews with the first result
/// </summary>
/// <param name="queryString">The query to search for news with</param>
/// <returns></returns>
private async Task GetLatestNews(string queryString)
{
BingNewsResponse news = await _bingSearch.SearchNews(queryString, SafeSearch.Moderate);
if (news != null && (news.value == null || news.value.Length == 0))
{
return;
}
await ParseNews(news.value[0]);
}
/// <summary>
/// Function to parse news search responses
/// Displays news article name, publish date and a short description in the UI
/// </summary>
/// <param name="bingNewsResponse"></param>
private void ParseNewsResponse(BingNewsResponse bingNewsResponse)
{
StringBuilder sb = new StringBuilder();
foreach (Value news in bingNewsResponse.value)
{
sb.AppendFormat("{0}\n", news.name);
sb.AppendFormat("Published: {0}\n", news.datePublished);
sb.AppendFormat("{0}\n\n", news.description);
}
SearchResults = sb.ToString();
}
public async Task <BingNewsResponse> SearchNews(string query, SafeSearch safeSearch)
{
string endpoint = string.Format("{0}{1}&safeSearch={2}&count=5&mkt=en-US", "https://api.cognitive.microsoft.com/bing/v5.0/news/search?q=", query, safeSearch.ToString());
try
{
BingNewsResponse response = await _webRequest.MakeRequest <BingNewsResponse>(endpoint);
return(response);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
return(null);
}
public async Task <BingNewsResponse> SearchNewsCategory(string query)
{
string endpoint = string.Format("{0}{1}&mkt=en-US", "https://api.cognitive.microsoft.com/bing/v5.0/news?category=", query);
try
{
BingNewsResponse response = await _webRequest.MakeRequest <BingNewsResponse>(endpoint);
return(response);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
return(null);
}
