Friday, January 22, 2010

Creating a RSS Feed for your website

Now I am going to explain how to Create RSS Feed for your website


Step 1. Open/ create new Website/ Project.
Step 2. Open/ Create aspx webpage.
Step 3. add the outputcache directve in the page by pasting the following code below the page directive in the html source view
<%@ OutputCache Duration="120" VaryByParam="Group" %>
Step 4. go to code (.cs) file of the page and add the following namesspaces
//---- To establish connection with database and fetching data which is to be publish in the RSS ----
using System.Data.SqlClient;

//--to create instance of encoding used in creating xmltextwriter
using System.Text;

//-- to create xmltextwriter
using System.Xml;

Step 5. Paste the following code in the page load event.
// Clear any previous output from the buffer
        Response.Clear();
        Response.ContentType = "text/xml";
        XmlTextWriter xtwRSSFeed = new XmlTextWriter(Response.OutputStream, Encoding.UTF8);
        xtwRSSFeed.WriteStartDocument();

        // The mandatory rss tag
        xtwRSSFeed.WriteStartElement("rss");
        xtwRSSFeed.WriteAttributeString("version", "2.0");

        // The channel tag contains RSS feed details
        xtwRSSFeed.WriteStartElement("channel");
        xtwRSSFeed.WriteElementString("title", "Title of the RSS");
        xtwRSSFeed.WriteElementString("link", "Link of the RSS");
        xtwRSSFeed.WriteElementString("description", "Description of the RSS.");
        xtwRSSFeed.WriteElementString("copyright", "Your Copyright Detail.");

        // Objects needed for connecting to the SQL database
        SqlConnection Con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConStr"].ToString());
        SqlCommand cmd = new SqlCommand("YourProcedureNameToGetDataFromDatabase", Con);
       
        cmd.CommandType = CommandType.StoredProcedure;
       
        if (Con.State == ConnectionState.Closed)
        {
            Con.Open();
        }

        SqlDataReader SqlDR = cmd.ExecuteReader();

        // Loop through the content of the database and add them to the RSS feed

        while (SqlDR.Read())
        {
            xtwRSSFeed.WriteStartElement("item");
            xtwRSSFeed.WriteElementString("title", SqlDR["Title"].ToString());
            xtwRSSFeed.WriteElementString("description", SqlDR["Description"].ToString());
            xtwRSSFeed.WriteElementString("link", "http://www.feedpedia.com/View.aspx?View=" + SqlDR["ID"]);
            xtwRSSFeed.WriteElementString("pubDate", SqlDR["Date"].ToString());
            xtwRSSFeed.WriteEndElement();
        }

        SqlDR.Close();
        Con.Close();

        // Close all tags

        xtwRSSFeed.WriteEndElement();
        xtwRSSFeed.WriteEndElement();
        xtwRSSFeed.WriteEndDocument();
        xtwRSSFeed.Flush();
        xtwRSSFeed.Close();
        Response.End();

Note. Dont forget to change the connection string in the web.config file

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