Question

IN .NET 3.5 I know of the System.ServiceModel.Syndication classes which can create Atom 1.0 and RSS 2.0 rss feeds. Does anyone know of a way to easily generate yahoo’s Media RSS in ASP.Net? I am looking for a free and fast way to generate an MRSS feed.

Answer 1

Here a simplified solution I ended up using within a HttpHandler (ashx):

        public void GenerateRss(HttpContext context, IEnumerable<Media> medias)
    {
        context.Response.ContentType = "application/rss+xml";
        XNamespace media = "http://search.yahoo.com/mrss";
        List<Media> videos2xml = medias.ToList();

        XDocument rss = new XDocument(
            new XElement("rss", new XAttribute("version", "2.0"),
                new XElement("channel",
                    new XElement("title", ""),
                    new XElement("link", ""),
                    new XElement("description", ""),
                    new XElement("language", ""),
                    new XElement("pubDate", DateTime.Now.ToString("r")),
                    new XElement("generator", "XLinq"),

                    from v in videos2xml
                    select new XElement("item",
                               new XElement("title", v.Title.Trim()),
                               new XElement("link", "",
                                   new XAttribute("rel", "alternate"),
                                   new XAttribute("type", "text/html"),
                                   new XAttribute("href", String.Format("/Details.aspx?vid={0}", v.ID))),
                               new XElement("id", NotNull(v.ID)),
                               new XElement("pubDate", v.PublishDate.Value.ToLongDateString()),
                               new XElement("description",
                                   new XCData(String.Format("<a href='/Details.aspx?vid={1}'> <img src='/Images/ThumbnailHandler.ashx?vid={1}' align='left' width='120' height='90' style='border: 2px solid #B9D3FE;'/></a><p>{0}</p>", v.Description, v.ID))),
                               new XElement("author", NotNull(v.Owner)),
                               new XElement("link",
                                   new XAttribute("rel", "enclosure"),
                                   new XAttribute("href", String.Format("/Details.aspx?vid={0}", v.ID)),
                                    new XAttribute("type", "video/wmv")),
                               new XElement(XName.Get("title", "http://search.yahoo.com/mrss"), v.Title.Trim()),
                               new XElement(XName.Get("thumbnail", "http://search.yahoo.com/mrss"), "",
                                   new XAttribute("url", String.Format("/Images/ThumbnailHandler.ashx?vid={0}", v.ID)),
                                   new XAttribute("width", "320"),
                                   new XAttribute("height", "240")),
                               new XElement(XName.Get("content", "http://search.yahoo.com/mrss"), "a",
                                    new XAttribute("url", String.Format("/Details.aspx?vid={0}", v.ID)),
                                    new XAttribute("fileSize", Default(v.FileSize)),
                                    new XAttribute("type", "video/wmv"),
                                    new XAttribute("height", Default(v.Height)),
                                    new XAttribute("width", Default(v.Width))
                                    )
                            )
                     )
                )
               );

        using (XmlWriter writer = new XmlTextWriter(context.Response.OutputStream, Encoding.UTF8))
        {
            try
            {
                rss.WriteTo(writer);
            }
            catch (Exception ex)
            {
                Log.LogError("VideoRss", "GenerateRss", ex);
            }
        }

    }