/// <summary>
/// Sort the items by date and truncate the number of feed items if it exceeds the
/// NumberOfItems property.
/// </summary>
public virtual void SortAndFilter()
{
FeedItem[] feedItemArray = new FeedItem[this._feedItems.Count];
this._feedItems.CopyTo(feedItemArray, 0);
Array.Sort(feedItemArray);
// Little dirty: clear FeedItems and add the first NumberOfItems from the sorted array.
this._feedItems.Clear();
int i = 0;
while (i < feedItemArray.Length && i < this._numberOfItems)
{
this._feedItems.Add(feedItemArray[i]);
i++;
}
}
/// <summary>
/// Refresh the items of a single feed. It doesn't save the new items!
/// </summary>
/// <param name="feed"></param>
public void RefreshFeedContents(Feed feed)
{
feed.FeedItems.Clear();
try
{
XmlDocument doc = GetFeedXml(feed.Url);
// Create an XmlNamespaceManager for resolving namespaces.
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("dc", "http://purl.org/dc/elements/1.1/");
XmlNodeList xmlItems = doc.SelectNodes("//channel/item");
foreach (XmlNode xmlItem in xmlItems)
{
FeedItem feedItem = new FeedItem();
// Truncate title to 100 characters
string title = xmlItem.SelectSingleNode("title").InnerText;
if (title.Length > 100)
{
title = title.Substring(0, 100);
}
feedItem.Title = title;
feedItem.Url = xmlItem.SelectSingleNode("link").InnerText;
if (xmlItem.SelectSingleNode("pubDate") != null)
{
feedItem.PubDate = RFC2822Date.Parse(xmlItem.SelectSingleNode("pubDate").InnerText);
}
else
{
feedItem.PubDate = DateTime.Now;
}
if (this._showContents && xmlItem.SelectSingleNode("description") != null)
{
feedItem.Content = xmlItem.SelectSingleNode("description").InnerText;
}
if (xmlItem.SelectSingleNode("author", nsmgr) != null)
{
feedItem.Author = xmlItem.SelectSingleNode("author", nsmgr).InnerText;
}
else if (xmlItem.SelectSingleNode("dc:creator", nsmgr) != null)
{
feedItem.Author = xmlItem.SelectSingleNode("dc:creator", nsmgr).InnerText;
}
feedItem.Feed = feed;
feed.FeedItems.Add(feedItem);
}
feed.SortAndFilter();
}
catch (Exception ex)
{
log.Error("Error refreshing feed contents for: " + feed.Title, ex);
throw;
}
}