我尝试访问发布日期时出现SyndicationFeed错误

Question

我尝试使用 SyndicationFeed 类，但它返回此错误

startIndex cannot be larger than length of string.
Parameter name: startIndex

当我尝试使用此代码访问发布日期时：

        SyndicationFeed feed = SyndicationFeed.Load(XmlReader.Create("http://www.petra.gov.jo/library/RSS/RSS_Local.xml?ID=635551188249965540"));
        foreach (SyndicationItem item in feed.Items)
        {
            HttpContext.Current.Response.Write(item.Title.Text + "///////" + item.PublishDate);
        }

堆栈跟踪

[ArgumentOutOfRangeException: startIndex cannot be larger than length of string.
Parameter name: startIndex]
   System.String.Substring(Int32 startIndex, Int32 length) +13911679
   System.ServiceModel.Syndication.Rss20FeedFormatter.DateFromString(String dateTimeString, XmlReader reader) +311
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadItemFrom(XmlReader reader, SyndicationItem result, Uri feedBaseUri) +1756

[XmlException: Error in line 19 position 44. An error was encountered when parsing the item's XML. Refer to the inner exception for more details.]
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadItemFrom(XmlReader reader, SyndicationItem result, Uri feedBaseUri) +5071296
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadItem(XmlReader reader, SyndicationFeed feed) +199
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadItems(XmlReader reader, SyndicationFeed feed, Boolean& areAllItemsRead) +181
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadXml(XmlReader reader, SyndicationFeed result) +2820
   System.ServiceModel.Syndication.Rss20FeedFormatter.ReadFrom(XmlReader reader) +209
   System.ServiceModel.Syndication.SyndicationFeed.Load(XmlReader reader) +203
   Class1.test() in c:\inetpub\wwwroot\Alordonia\App_Code\Class1.cs:16
   _Default.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\Alordonia\Default.aspx.cs:12
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178