asp.net中生成、读取RSS

主要是生成、读取xml文件，这里Repeater作为xml的载体，并不真正生成xml文件。
要注意语句，CDATA 节用于转义，否则将被识别为标记的文本块。类似html中的标签，用于兼容一些浏览器。
 RssFeed.aspx
<%@ Page language="c#" Codebehind="RssFeed.aspx.cs" AutoEventWireup="false" Inherits="MyRss.RssFeed" %>






Rss Feed for 192.168.1.7

]]>
%# DataBinder.Eval(Container.DataItem, "newsid") %>
<%# String.Format("{0:R}",DataBinder.Eval(Container.DataItem,"wtime")) %>

RssFeed.aspx.cs
  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
   if(!this.IsPostBack)
   {
    Response.ContentType="text/xml";
    SqlConnection con=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]);
    SqlCommand cmd=new SqlCommand("select top 20 * from news order by newsid desc",con);
    con.Open();
    SqlDataReader dr=cmd.ExecuteReader();
    Repeater1.DataSource=dr;
    Repeater1.DataBind();
    dr.Close();
    con.Close();
   }   
  }
  protected string FormatForXML(object input)
  {
   string data=input.ToString();
   data=data.Replace("&","&");
   data=data.Replace("/",""");
   data=data.Replace("'","&qapos;");
   data=data.Replace("<","<");
   data=data.Replace(">",">");
   return data;
  }

ReadRss.aspx
<%@ Page language="c#" Codebehind="ReadRss.aspx.cs" AutoEventWireup="false" Inherits="MyRss.ReadRss" %>


 
  
  
  
  
  
 
 
  

  <%
  string rssURL = "";
  ProcessRSSItem(rssURL);%>
  
 

ReadRss.aspx.cs
public void ProcessRSSItem(string rssURL)
  {
   System.Net.WebRequest myRequest = System.Net.WebRequest.Create(rssURL);
   System.Net.WebResponse myResponse = myRequest.GetResponse();

   System.IO.Stream rssStream = myResponse.GetResponseStream();
   System.Xml.XmlDocument rssDoc = new System.Xml.XmlDocument();
   rssDoc.Load(rssStream);

   System.Xml.XmlNodeList rssItems = rssDoc.SelectNodes("rss/channel/item");

   string title = "";
   string link = "";
   string description = "";

   for (int i = 0; i < rssItems.Count; i++)
   {
    System.Xml.XmlNode rssDetail;

    rssDetail = rssItems.Item(i).SelectSingleNode("title");
    if (rssDetail != null)
    {
     title = rssDetail.InnerText;
    }
    else
    {
     title = "";
    }

    rssDetail = rssItems.Item(i).SelectSingleNode("link");
    if (rssDetail != null)
    {
     link = rssDetail.InnerText;
    }
    else
    {
     link = "";
    }

    rssDetail = rssItems.Item(i).SelectSingleNode("description");
    if (rssDetail != null)
    {
     description = rssDetail.InnerText;
    }
    else
    {
     description = "";
    }

    Response.Write("

" + title + "
");
    Response.Write(description + "

");
   }
  }