private void OnExecuteSearchCommand()
{
SearchResults.Clear();
Metas.Clear();
Task.Factory.StartNew(() =>
{
var result = new HtmlWeb().Load(string.Format(Url, QueryString));
//var nodes = result.DocumentNode.SelectNodes("//html//body//div[@class='g']").Select(r => r.InnerHtml).Take(10);
//SearchResults.Clear();
//foreach (var node in nodes)
//{
// SearchResults.Add(node);
//}
// extract links
var searchResultCount = 0;
foreach (var link in result.DocumentNode.SelectNodes("//a[@href]"))
{
var hrefValue = link.GetAttributeValue("href", string.Empty);
if (hrefValue.ToUpper().Contains("GOOGLE") || !hrefValue.Contains("/url?q=") ||
!hrefValue.ToUpper().Contains("HTTP://")) continue;
var index = hrefValue.IndexOf("&", StringComparison.Ordinal);
if (index <= 0) continue;
hrefValue = hrefValue.Substring(0, index);
var searchResultUrl = hrefValue.Replace("/url?q=", "");
if (searchResultCount == 20) continue;
searchResultCount++;
_dispatcher.Invoke(() =>
{
SearchResults.Add(searchResultUrl);
}, DispatcherPriority.Normal);
}
Parallel.ForEach(SearchResults, (c) =>
{
var meta = LoadMeta(c);
HtmlTool.FetchOg(c);
_dispatcher.Invoke(() =>
{
Metas.Add(meta);
});
});
});
}