public static void ExportOpml(string filename, IEnumerable<Feed> feeds, string name) {
var opml = new OpmlDocument();
opml.Head.Title = String.Format("{0} Export", name); ;
var categories = from f in feeds
group f by f.Category into c
select new {
Name = c.Key,
Feeds = c.ToList()
};
foreach (var category in categories) {
var outline = new OpmlOutline(category.Name);
outline.Attributes.Add("title", category.Name);
foreach (var feed in category.Feeds) {
var let = new OpmlOutline(feed.Title);
let.Attributes.Add("type", "rss");
let.Attributes.Add("title", feed.Title);
let.Attributes.Add("xmlUrl", feed.Url);
let.Attributes.Add("htmlUrl", feed.SiteUrl);
outline.Outlines.Add(let);
}
opml.AddOutline(outline);
}
using (var stream = File.Open(filename, FileMode.Create, FileAccess.Write, FileShare.None)) {
opml.Save(stream);
}
}
//============================================================
// CLASS SUMMARY
//============================================================
/// <summary>
/// Provides example code for the OpmlOutline class.
/// </summary>
public static void ClassExample()
{
#region OpmlOutline
OpmlDocument document = new OpmlDocument();
document.Head.Title = "Example OPML List";
document.Head.CreatedOn = new DateTime(2005, 6, 18, 12, 11, 52);
document.Head.ModifiedOn = new DateTime(2005, 7, 2, 21, 42, 48);
document.Head.Owner = new OpmlOwner("John Doe", "*****@*****.**");
document.Head.VerticalScrollState = 1;
document.Head.Window = new OpmlWindow(61, 304, 562, 842);
// Create outline that contains child outlines
OpmlOutline containerOutline = new OpmlOutline("Feeds");
containerOutline.Outlines.Add(OpmlOutline.CreateSubscriptionListOutline("Argotic", "rss", new Uri("http://www.codeplex.com/Argotic/Project/ProjectRss.aspx")));
containerOutline.Outlines.Add(OpmlOutline.CreateSubscriptionListOutline("Google News", "feed", new Uri("http://news.google.com/?output=atom")));
document.AddOutline(containerOutline);
#endregion
}
