public static GeoRSSSource ParseGeoRSSXml(string xmlGeoRSS, string filter, bool toMercator)
{
GeoRSSSource rssSource = new GeoRSSSource();
XDocument xmlDoc = XDocument.Parse(xmlGeoRSS, LoadOptions.None);
IEnumerable <XElement> children = null;
switch (xmlDoc.Root.Name.LocalName.ToLower())
{
case "rss":
XElement channelElem = ((XElement)xmlDoc.Root.FirstNode);
children = channelElem.Elements();
rssSource.SourceType = GeoRSSSourceType.RSS;
break;
case "feed":
children = xmlDoc.Root.Elements();
rssSource.SourceType = GeoRSSSourceType.ATOM;
break;
}
foreach (XElement elem in children)
{
switch (elem.Name.LocalName.ToLower())
{
case "title":
rssSource.Title = elem.Value; break;
case "link":
rssSource.Link = (elem.HasAttributes) ? elem.FirstAttribute.Value : elem.Value; break;
case "summary":
case "content":
case "description":
rssSource.Description = elem.Value; break;
case "pubdate":
case "updated":
DateTime pubdate;
DateTime.TryParse(elem.Value, out pubdate);
rssSource.pubDate = pubdate;
break;
case "item":
case "entry":
GeoRSSItem item = ParseGeoRSSItem(elem, toMercator);
bool containKey = string.IsNullOrEmpty(filter) ? true : item.Title.Contains(filter);
if (containKey)
{
rssSource.Items.Add(item);
}
break;
}
}
return(rssSource);
}
private void RSSClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
string xmlRSS = e.Result;
if (!string.IsNullOrEmpty(xmlRSS))
{
GeoRSSSource rssSource = GeoRSSHelper.ParseGeoRSSXml(xmlRSS, widgetConfig.Filter, GeometryTool.IsWebMercatorSR(this.MapSRWKID));
ListGeoRSSItems.ItemsSource = rssSource.Items;
if (this.Visibility == Visibility.Visible)
{
AddGeoRSSGraphics(rssSource.Items);
}
}
this.IsBusy = false;
}