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刚写的，Rss2.0输出，用XmlTextWriter完成，贴给你

V_UserGirlPhotos[] photos = gatway.From<V_UserGirlPhotos>()
         .OrderBy(V_UserGirlPhotos._.DateCreated.Desc).ToArray<V_UserGirlPhotos>(100);

        XmlTextWriter writer = new XmlTextWriter(MapPath("~/rss.xml"), System.Text.Encoding.UTF8);
        writer.Indentation = 3;
        writer.Formatting = Formatting.Indented;

        writer.WriteStartDocument(true);      
        writer.WriteStartElement("rss");     
        writer.WriteAttributeString("version","2.0");
        writer.WriteStartElement("channel");

        writer.WriteStartElement("title");
        writer.WriteString("Girls2You.Com RSS");
        writer.WriteEndElement();

         writer.WriteStartElement("link");
        writer.WriteString("http://ww.girls2you.com");
        writer.WriteEndElement();

        writer.WriteStartElement("description");
        writer.WriteString("desc");
        writer.WriteEndElement();


        foreach (V_UserGirlPhotos p in photos)
        {
            writer.WriteStartElement("item");

            writer.WriteStartElement("title");
            writer.WriteCData(p.Title);
            writer.WriteEndElement();


            writer.WriteStartElement("link");
            writer.WriteCData("http://www.girls2you.com/detail.aspx?ID=" + p.ID);
            writer.WriteEndElement();
          

            writer.WriteStartElement("description");
            string src = "<img src='" + SiteConst.WEBSITE + ResolveUrl(p.LargeImageUrl) + "' border='0' />";
            writer.WriteCData(src + "<div>Tags：" + p.RssLinkTags + "</div>");
            writer.WriteEndElement();


            writer.WriteElementString("pubDate", p.DateCreated.ToString());

    writer.WriteEndElement();
        }
       


        writer.WriteEndElement();
        writer.WriteEndElement();
        writer.WriteEndDocument();
        writer.Close();

        Response.Redirect("rss.xml",true);          

提问者对于答案的评价：嗯。谢谢您的热心帮助。 另外在园子里一哥们给我推荐了一本书叫Professional ASP.NET 2.0 XML，wrox系列的，我正在看，感觉非常地不错。虽然可能在3.5下对xml的操作可能会有一些变动，可是我觉得如果能把2.0中的xml的操作好好的理解也是非常必要的。