在Web站点中创建和使用Rss源（一）

	 

	 

	using System;

	using System.Data;

	using System.Configuration;

	using System.Xml;

	using System.Text;

	using System.IO;

	using System.Collections.Generic;

	 

	/// <summary>

	/// Rss 的摘要说明

	/// </summary>

	public class Rss

	{

	    private Stream outputStream;

	    public Stream OutputStream

	    {

	        get { return outputStream; }

	        set { outputStream = value; }

	    }

	 

	    private string rssTitle;

	    public string RssTitle

	    {

	        get { return rssTitle; }

	        set { rssTitle = value; }

	    }

	 

	    private string publisherUrl;

	    public string PublisherUrl

	    {

	        get { return publisherUrl; }

	        set { publisherUrl = value; }

	    }

	 

	    private string description;

	    public string Description

	    {

	        get { return description; }

	        set { description = value; }

	    }

	 

	    private string copyright;

	    public string Copyright

	    {

	        get { return copyright; }

	        set { copyright = value; }

	    }

	 

	    private string generator;

	    public string Generator

	    {

	        get { return generator; }

	        set { generator = value; }

	    }

	 

	    private DataSet itemSource;

	    public DataSet ItemSource

	    {

	        get { return itemSource; }

	        set { itemSource = value; }

	    }

	 

	    private string itemTitleField;

	    public string ItemTitleField

	    {

	        get { return itemTitleField; }

	        set { itemTitleField = value; }

	    }

	 

	    private string itemUrlField;

	    public string ItemUrlField

	    {

	        get { return itemUrlField; }

	        set { itemUrlField = value; }

	    }

	 

	    private string itemDescriptionField;

	    public string ItemDescriptionField

	    {

	        get { return itemDescriptionField; }

	        set { itemDescriptionField = value; }

	    }

	 

	    private string itemPublicationDateField;

	    public string ItemPublicationDateField

	    {

	        get { return itemPublicationDateField; }

	        set { itemPublicationDateField = value; }

	    }

	 

	    private string itemAuthor;

	    public string ItemAuthor

	    {

	        get { return itemAuthor; }

	        set { itemAuthor = value; }

	    }

	 

	 

	    public static void PublishRss(Rss r)

	    {

	        XmlTextWriter writer = new XmlTextWriter(r.OutputStream, Encoding.UTF8);

	        writer.WriteStartDocument();

	        writer.WriteStartElement("rss");

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

	        writer.WriteStartElement("channel");

	        writer.WriteElementString("title", r.RssTitle);

	        writer.WriteElementString("link", r.PublisherUrl);

	        writer.WriteElementString("Description", r.Description);

	        writer.WriteElementString("copyright", r.Copyright);

	        writer.WriteElementString("generator", r.Generator);

	 

	        foreach (DataRow row in r.itemSource.Tables[0].Rows)

	        {

	            writer.WriteStartElement("item");

	            writer.WriteElementString("author", row[r.ItemAuthor].ToString());

	            writer.WriteElementString("title", row[r.ItemTitleField].ToString());

	            writer.WriteElementString("link", row[r.itemUrlField].ToString());

	            writer.WriteElementString("description", row[r.ItemDescriptionField].ToString());

	            writer.WriteElementString("pubDate", GetRssDate(row[r.ItemPublicationDateField]));

	            writer.WriteEndElement();

	        }

	        writer.WriteEndElement();

	        writer.WriteEndElement();

	        writer.WriteEndDocument();

	        writer.Flush();

	 

	    }

	 

	    public static string GetRssDate(Object date)

	    {

	        DateTime rssDate = Convert.ToDateTime(date);

	        string[] monthName = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };

	        StringBuilder sb = new St

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