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What is RSS, and reading and writing RSS feeds

, 24 Feb 2010
This article explains what RSS is and how we can read and write RSS feeds.
using System;
using System.Web.UI.WebControls;
using System.Data;
using System.Xml;
using System.Xml.XPath;
using System.Text;
using System.Net;
using System.IO;

public partial class CricinfoAspNet : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnCricinfo_Click(object sender, EventArgs e)
    {
        Response.Clear();
        //  create here table and columns that will be used 
        //  for storing items from the xml file for later binding into grid 
        DataTable dtable = new DataTable();
        dtable.Columns.Add(new DataColumn("Match Name"));
        dtable.Columns.Add(new DataColumn("View Match"));

        //  fetch webrequest. Here, give the path of the location where rss feed is stored.
        WebRequest WebReq = WebRequest.Create("http://static.cricinfo.com/rss/livescores.xml");
       
        //get webresponse from the webrequset 
        WebResponse webRes = WebReq.GetResponse();

        //use stream to stremline the input from from webresponse.
        Stream rssStream = webRes.GetResponseStream();

        //  Create new xml document and load a XML Document
        //  with the strem.
        XmlDocument xmlDoc = new XmlDocument();
        
        //loads the url from the stream
        xmlDoc.Load(rssStream);

        //  use XmlNodeList to get the matching xmlnodes from the xmldocument
        XmlNodeList xmlNodeList = xmlDoc.SelectNodes("rss/channel/item");

        //create array of the object for creating the row
        object[] RowValues = { "", "" };

        //Make a Loop through RSS Feed items
        for (int i = 0; i < xmlNodeList.Count; i++)
        {
            XmlNode xmlNode;

            xmlNode = xmlNodeList.Item(i).SelectSingleNode("title");
            if (xmlNode != null)
            {
                RowValues[0] = xmlNode.InnerText;
            }
            else
            {
                RowValues[0] = "";
            }

            xmlNode = xmlNodeList.Item(i).SelectSingleNode("guid");
            if (xmlNode != null)
            {
                RowValues[1] = xmlNode.InnerText;
            }
            else
            {
                RowValues[1] = "";
            }
            //  creating datarow and add it to the datatable
            DataRow dRow;
            dRow = dtable.Rows.Add(RowValues);
            dtable.AcceptChanges();
        }
        //  finally bind the grid....
        grvRSS.DataSource = dtable;
        grvRSS.DataBind();
    }
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Indrajeet Sutar
Software Developer (Junior) Excel Informatics, Pune
India India
Am Indrajeet T. Sutar. I am a web developer. I am working on .net technology. I have completed my Masters in Computers and Management (people call it as MCA, MBA etc.) Apart from programming i do photography (not regularly though), traveling and reading books.

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