ASP.NET 生成Rss

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Xml;

using System.Data.SqlClient;

public partial class Rss_Xml_RssNew : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        try

        {

            string xmlname = "RssNew.xml";

            SqlDataReader dr = Rss_News.GetNoImgInfo(50);

            DB2rss(xmlname, dr);

            Jsp.Alert("Rss生成成功！");

        }

        catch

        {

            Jsp.Alert("不带图片的Rss生成失败！");

        }

    }

    public void DB2rss(string XmlFile,SqlDataReader dr)

    {

        XmlTextWriter xr = new XmlTextWriter(Server.MapPath(XmlFile), System.Text.Encoding.GetEncoding("GB2312"));

        xr.Formatting = Formatting.Indented;

        xr.WriteStartDocument();

        xr.WriteProcessingInstruction("xml-stylesheet", "type=\"text/css\" href=\"http://img.china.alibaba.com/news/rsstyle.css\"");

        xr.WriteStartElement("rss");

        xr.WriteAttributeString("version", "2.0");

        xr.WriteStartElement("channel");

        xr.WriteElementString("title", "新闻中心");//频道名称 

        xr.WriteElementString("link", "http://www.baidu.com/");//频道的URL 

        xr.WriteElementString("description", "新闻中心");//频道的描述 

        xr.WriteElementString("language", "zh-cn");//频道文章所用语言 

        xr.WriteElementString("managingEditor","[email protected]");//责任编辑的email 

        xr.WriteElementString("webMaster","[email protected]");//网站管理员email 

        xr.WriteElementString("generator","阿里巴巴提供");//该新闻的出处,一般填写合作网站 

        xr.WriteElementString("lastBuildDate", DateTime.Now.ToString("r"));//频道内容最后的修改日期

        while (dr.Read())

        {

            xr.WriteStartElement("item");

            xr.WriteElementString("title", dr.GetString(0));

            xr.WriteElementString("author","☆小/ka喆￠");

            xr.WriteElementString("link",Static_pages.getTimeRoute("http://www.baidu.com/news/news/",dr.GetDateTime(1).ToString()));

            xr.WriteElementString("category","子类目id，这个id由alibaba提供 ");

            xr.WriteElementString("tags", "新闻,资讯");

            xr.WriteElementString("description", dr.GetString(2));

            xr.WriteElementString("pubDate", dr.GetDateTime(3).ToString("r"));

            xr.WriteEndElement();

        }

        //dr.Close();

        xr.WriteEndElement();

        xr.WriteEndElement();

        xr.WriteEndDocument();

        xr.Flush();

        xr.Close();

    }

    protected void Button2_Click(object sender, EventArgs e)

    {

        try

        {

            string xmlname = "RssNewImg.xml";

            SqlDataReader dr = Rss_News.GetImgInfo(50);

            DB2rss(xmlname, dr);

            Jsp.Alert("Rss生成成功！");

        }

        catch

        {

            Jsp.Alert("带图片的Rss生成失败！");

        }

    }

}

============================数据库操作

    public static SqlDataReader GetNoImgInfo(int num)

    {

        string sql = "select top " + num + " biaoti,datetime,neirong,zjsxshijian from e_zixun where dalei <> '流行前沿' and renzheng=1 and CHARINDEX('<img',neirong) = 0  order by zjsxshijian desc";

        SqlCommand cmd = new SqlCommand();

        //定义对象资源保存的范围，一旦using范围结束，将释放对方所占的资源

        using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionStringLocalTransaction))

        {

            //调用执行方法，因为没有参数，所以最后一项直接设置为null

            //注意返回结果是dataset类型

            SqlDataReader dr = SqlHelper.ExecuteReader(sql);

            return dr;

        }

    }

    public static SqlDataReader GetImgInfo(int num)

    {

        string sql = "select top " + num + " biaoti,datetime,neirong,zjsxshijian from e_zixun where dalei <> '流行前沿' and renzheng=1 and CHARINDEX('<img',neirong) > 0  order by zjsxshijian desc";

        SqlCommand cmd = new SqlCommand();

        //定义对象资源保存的范围，一旦using范围结束，将释放对方所占的资源

        using (SqlConnection conn = new SqlConnection(SqlHelper.ConnectionStringLocalTransaction))

        {

            //调用执行方法，因为没有参数，所以最后一项直接设置为null

            //注意返回结果是sqldatareader类型

            SqlDataReader dr = SqlHelper.ExecuteReader(sql);

            return dr;

        }

    }

=================================SqlHelper

    public static SqlDataReader ExecuteReader(string strSQL)

    {

        SqlConnection connection = new SqlConnection(ConnectionStringLocalTransaction);

        SqlCommand cmd = new SqlCommand(strSQL, connection);

        try

        {

            connection.Open();

            SqlDataReader myReader = cmd.ExecuteReader();

            return myReader;

        }

        catch (System.Data.SqlClient.SqlException e)

        {

            throw new Exception(e.Message);

        }

    }