A very standard, powerful and easy to use Sample and Library for working on RSS 2.0

namespace IranianExperts.RSS
{
	public sealed class RSSUtilities
	{
		private RSSUtilities(){}

		/// <summary>
		/// Get some DataTable from RSS file.
		/// </summary>
		/// <param name="location"></param>
		/// <param name="address"></param>
		/// <param name="feedType"></param>
		/// <returns></returns>
		public static System.Data.DataTable GetRSSFeed(RSSLocation location, string address, RSSFeedType feedType)
		{
			int intIndex = 0;
			int intItemTableIndex = -1;

			System.IO.StreamReader oStreamReader = null;
			System.Xml.XmlTextReader oXmlTextReader = null;

			switch(location)
			{
				case RSSLocation.URL:
					oXmlTextReader = new System.Xml.XmlTextReader(address);
					break;

				case RSSLocation.Drive:
					oStreamReader = new System.IO.StreamReader(address, System.Text.Encoding.UTF8);
					oXmlTextReader = new System.Xml.XmlTextReader(oStreamReader);
					break;
			}

			System.Data.DataSet oDataSet = new System.Data.DataSet();
			oDataSet.ReadXml(oXmlTextReader, System.Data.XmlReadMode.Auto);

			oXmlTextReader.Close();
			if(location == RSSLocation.Drive)
				oStreamReader.Close();

			while((intIndex <= oDataSet.Tables.Count - 1) && (intItemTableIndex == -1))
			{
				if(oDataSet.Tables[intIndex].TableName.ToUpper() == feedType.ToString().ToUpper())
					intItemTableIndex = intIndex;

				intIndex++;
			}

			if(intItemTableIndex == -1)
				return(null);
			else
				return(oDataSet.Tables[intItemTableIndex]);
		}

		/// <summary>
		/// Create RSSRoot and write it to stream.
		/// </summary>
		/// <param name="rSSRoot"></param>
		/// <returns></returns>
		public static bool PublishRSS(RSSRoot rSSRoot)
		{
			bool blnResult = true;

			if(rSSRoot == null)
				return(false);

			if(rSSRoot.Channel == null)
				return(false);

			System.Xml.XmlTextWriter oXmlTextWriter = new System.Xml.XmlTextWriter(rSSRoot.OutputStream, System.Text.Encoding.UTF8);

			oXmlTextWriter.WriteStartDocument();

			oXmlTextWriter.WriteStartElement("rss");
			oXmlTextWriter.WriteAttributeString("version", "2.0");

			oXmlTextWriter.WriteStartElement("channel");

			oXmlTextWriter.WriteElementString("link", rSSRoot.Channel.Link);
			oXmlTextWriter.WriteElementString("title", rSSRoot.Channel.Title);
			oXmlTextWriter.WriteElementString("description", rSSRoot.Channel.Description);

			if(rSSRoot.Channel.Docs != "")
				oXmlTextWriter.WriteElementString("docs", rSSRoot.Channel.Docs);

			if(rSSRoot.Channel.PubDate != "")
			{
				System.DateTime sDateTime = System.Convert.ToDateTime(rSSRoot.Channel.PubDate);
				oXmlTextWriter.WriteElementString("pubDate", sDateTime.ToString("ddd, dd MMM yyyy HH:mm:ss G\\MT"));
			}

			if(rSSRoot.Channel.Generator != "")
				oXmlTextWriter.WriteElementString("generator", rSSRoot.Channel.Generator);

			if(rSSRoot.Channel.WebMaster != "")
				oXmlTextWriter.WriteElementString("webMaster", rSSRoot.Channel.WebMaster);

			if(rSSRoot.Channel.Copyright != "")
				oXmlTextWriter.WriteElementString("copyright", rSSRoot.Channel.Copyright);

			if(rSSRoot.Channel.LastBuildDate != "")
			{
				System.DateTime sDateTime = System.Convert.ToDateTime(rSSRoot.Channel.LastBuildDate);
				oXmlTextWriter.WriteElementString("lastBuildDate", sDateTime.ToString("ddd, dd MMM yyyy HH:mm:ss G\\MT"));
			}

			if(rSSRoot.Channel.ManagingEditor != "")
				oXmlTextWriter.WriteElementString("managingEditor", rSSRoot.Channel.ManagingEditor);

			oXmlTextWriter.WriteElementString("language", rSSRoot.Channel.Language.ToString().Replace("_", "-"));

			if(rSSRoot.Image != null)
			{
				oXmlTextWriter.WriteStartElement("image");

				oXmlTextWriter.WriteElementString("url", rSSRoot.Image.URL);
				oXmlTextWriter.WriteElementString("link", rSSRoot.Image.Link);
				oXmlTextWriter.WriteElementString("title", rSSRoot.Image.Title);

				if(rSSRoot.Image.Description != "")
					oXmlTextWriter.WriteElementString("description", rSSRoot.Image.Description);

				if(rSSRoot.Image.Width != 0)
					oXmlTextWriter.WriteElementString("width", rSSRoot.Image.Width.ToString());

				if(rSSRoot.Image.Height != 0)
					oXmlTextWriter.WriteElementString("height", rSSRoot.Image.Height.ToString());

				oXmlTextWriter.WriteEndElement();
			}

			foreach(RSSItem itmCurrent in rSSRoot.Items)
			{
				oXmlTextWriter.WriteStartElement("item");

				if(itmCurrent.Link != "")
					oXmlTextWriter.WriteElementString("link", itmCurrent.Link);

				if(itmCurrent.Title != "")
					oXmlTextWriter.WriteElementString("title", itmCurrent.Title);

				if(itmCurrent.Author != "")
					oXmlTextWriter.WriteElementString("author", itmCurrent.Author);

				if(itmCurrent.PubDate != "")
				{
					System.DateTime sDateTime = System.Convert.ToDateTime(itmCurrent.PubDate);
					oXmlTextWriter.WriteElementString("pubDate", sDateTime.ToString("ddd, dd MMM yyyy HH:mm:ss G\\MT"));
				}

				if(itmCurrent.Comment != "")
					oXmlTextWriter.WriteElementString("comment", itmCurrent.Comment);

				if(itmCurrent.Description != "")
					oXmlTextWriter.WriteElementString("description", itmCurrent.Description);

				oXmlTextWriter.WriteEndElement();
			}

			oXmlTextWriter.WriteEndElement();
			oXmlTextWriter.WriteEndElement();

			oXmlTextWriter.WriteEndDocument();

			oXmlTextWriter.Flush();
			oXmlTextWriter.Close();

			return(blnResult);
		}

		#region Support
		public static string Owner
		{
			get
			{
				return("Dariush Tasdighi - From Tehran, Iran");
			}
		}

		public static string Version
		{
			get
			{
				return("1.0.0");
			}
		}

		public static string Support
		{
			get
			{
				return("Dariush@IranianExperts.com;DariushT@GMail.com;DariushTasdighi@Yahoo.com");
			}
		}

		public static string Homepage
		{
			get
			{
				return("http://www.IranianExperts.com;http://groups.yahoo.com/group/IranianExperts");
			}
		}

		public static string UpdatedDate
		{
			get
			{
				return("14 Feb 2005");
			}
		}
		#endregion
	}
}