public async Task ExecuteHeaderCommand()
{
if (IsHeaderBusy)
{
return;
}
IsHeaderBusy = true;
try
{
HeaderPosts.Clear();
await getHeaderArticleData().ConfigureAwait(false);
}
catch (Exception ex)
{
Debug.WriteLine(ex);
MessagingCenter.Send(new MessagingCenterAlert
{
Title = "Error",
Message = "Unable to load items.",
Cancel = "OK"
}, "message");
}
finally
{
IsHeaderBusy = false;
}
}
public async Task getHeaderArticleData()
{
if (HeaderPosts.Count != 0)
{
return;
}
string htmlPage;
try
{
using (var client = new HttpClient())
{
htmlPage = await client.GetStringAsync("http://id.wikihow.com/Halaman-Utama").ConfigureAwait(false);
}
htmlDocument.LoadHtml(htmlPage);
var innerText = htmlDocument.DocumentNode
.Descendants("div")
.Where(o => o.GetAttributeValue("class", "") == "hp_top").ToList();
foreach (var div in innerText)
{
Post newPosts = new Post();
string imageUrl = "";
string title = "";
string url = "";
string htmlDiv = "<html>" + div.OuterHtml + "</html>";
imageUrl = Regex.Match(htmlDiv, "<img.+?src=[\"'](.+?)[\"'].*?>", RegexOptions.IgnoreCase).Groups[1].Value;
title = Regex.Match(htmlDiv, "<div.+?title=[\"'](.+?)[\"'].*?>", RegexOptions.IgnoreCase).Groups[1].Value;
url = Regex.Match(htmlDiv, "<a.+?href=[\"'](.+?)[\"'].*?>", RegexOptions.IgnoreCase).Groups[1].Value;
title = WebUtility.HtmlDecode(title);
//HtmlDecode
//"http://id.wikihow.com" +
newPosts.Title = "CARA " + title;
newPosts.ImageUrl = imageUrl;
newPosts.PostUrl = "https://id.wikihow.com" + url;
HeaderPosts.Add(newPosts);
}
}
catch (Exception)
{
}
}
