Rss订阅内容

前台页面只有:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %> 

 后台代码:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Data.SqlClient;
using System.Text;


    public partial class _Default : System.Web.UI.Page
    {

        protected void Page_Load(object sender, EventArgs e)
        {
            Response.ContentType = "text/xml";
            Response.Write(GetRSS());
        }
        /// <summary>
        /// 取得聚合文章
        /// </summary>
        /// <returns></returns>
        public string GetRSS()
        {
            News t = new News();//自己的业务类
            DataSet ds = t.GetListByClass(1);//根据类别得到数据

            StringBuilder strCode = new StringBuilder();
            strCode.Append("<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\" ?>");
            strCode.Append("<rss version='2.0' xmlns:dc=\"http://purl.org/dc/elements/1.1/\"");
            strCode.Append(" xmlns:trackback=\"http://madskills.com/public/xml/rss/module/trackback/\" ");
            strCode.Append(" xmlns:wfw=\"http://wellformedweb.org/CommentAPI/\" xmlns:slash=\"http://purl.org/rss/1.0/modules/slash/\">");
            strCode.Append("<channel>");
            strCode.Append("<title>Demo</title>");
            strCode.Append("<link>http://" + Request.ServerVariables["SERVER_NAME"] + "</link> ");
            strCode.Append("<description>11</description> ");
            strCode.Append("<copyright>Copyright 2010</copyright> ");

            foreach (DataRow row in ds.Tables[0].Rows)
            {
                string NewsId = row["NewsId"].ToString();
                string Heading = row["Heading"].ToString();
                string Content = row["Content"].ToString();
                string IssueDate = row["IssueDate"].ToString();
                string ClassId = row["ClassId"].ToString();


                strCode.Append("<item>");
                strCode.Append("<title>" + Heading + "</title>");
                strCode.Append("<link>http://" + Request.ServerVariables["SERVER_NAME"] + "/NewsShow.aspx?ID=" + NewsId + "</link>");
                strCode.Append("<subject>" + Content + "</subject>");
                strCode.Append("<description><![CDATA[" + Content + "]]></description>");
                strCode.Append("<PubDate>" + IssueDate + "</PubDate>");
                strCode.Append("<category>" + ClassId + "</category>");
                strCode.Append("</item>");
            }
            strCode.Append("</channel>");
            strCode.Append("</rss>");
            return strCode.ToString();
        }

        /// <summary>
        /// 获取数据类
        /// </summary>
        public class News
        {
            /// <summary>
            /// 获得数据列表
            /// </summary>
            public DataSet GetListByClass(int id)
            {
                string strSQL = "select * from T_News order by NewsId";
                return Query(strSQL);
            }

            /// <summary>
            /// 执行查询语句，返回DataSet
            /// </summary>
            /// <param name="SQLString">查询语句</param>
            /// <returns>DataSet</returns>
            public static DataSet Query(string SQLString)
            {
                string conString = "data source=127.0.0.1;Database=test;user id=sa;password=";
                using (SqlConnection connection = new SqlConnection(conString))
                {
                    DataSet ds = new DataSet();
                    try
                    {
                        connection.Open();
                        SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
                        command.Fill(ds, "ds");
                    }
                    catch (System.Data.SqlClient.SqlException ex)
                    {
                        throw new Exception(ex.Message);
                    }
                    return ds;
                }
            }
        }

    }