Create Rss Feeds In ASP.NET Consume With Custom Feed Reader

In this example i'm going to describe how to Create Rss Feeds In ASP.NET 2.0,3.5,4.0 And Consume With Custom Feed Reader for your web application using C# VB.Net, First of all we need to create a SQL server database to store and fetch data for feeds.

Create a database and name it RSS and create a table according to image below

And add some data in this table.


Now create a new website in Visual studio and name it RssFeed
Add a new web form and name it Employees.

Go to html source of the page
And add this page directive below the first line on the page

<%@ OutputCache Duration="120" VaryByParam="EmpId" %>

Now go to code behind of Employee page and write this code

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.Text;
using System.Data.SqlClient;
public partial class Employees : System.Web.UI.Page
{
string strConnection =
ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
// Clear the response buffer contents
Response.Clear();
Response.ContentType = "text/xml";
XmlTextWriter rssFeed = new XmlTextWriter
(Response.OutputStream, Encoding.UTF8);

//writing RSS tags
rssFeed.WriteStartDocument();
rssFeed.WriteStartElement("rss");
rssFeed.WriteAttributeString("version", "2.0");
rssFeed.WriteStartElement("channel");
rssFeed.WriteElementString("title", "Employee Details");
rssFeed.WriteElementString("link", "http://localhost:2923/RssFeed");
rssFeed.WriteElementString("description", "Details of Employees");

// create sql connection and connect to database
SqlConnection con = new SqlConnection(strConnection);
SqlCommand cmd = new SqlCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Select * from Employee";
cmd.Connection = con;
con.Open();
SqlDataReader dReader ;
dReader = cmd.ExecuteReader();
while (dReader.Read())
{
rssFeed.WriteStartElement("item");
rssFeed.WriteElementString("title", dReader["FirstName"].ToString()
+ " " +dReader["LastName"].ToString());
rssFeed.WriteElementString("description", dReader["Location"].ToString());
rssFeed.WriteElementString("link",
"http://localhost:2923/RssFeed/Employees.aspx?EmpID=" +
dReader["ID"]);
rssFeed.WriteElementString("pubDate", DateTime.Now.ToString());
rssFeed.WriteEndElement();
}
dReader.Close();
con.Close();
rssFeed.WriteEndElement();
rssFeed.WriteEndElement();
rssFeed.WriteEndDocument();
rssFeed.Flush();
rssFeed.Close();
Response.End();

}

}
}

Save, build and run the project

Creating custom RSS FEED reader

Create a new project and add new web form to it , name it FeedReader.
Add a new web form and name it anything you want, go to html source of the page and add this
inside <form> tag of the form

<table cellpadding="0" cellspacing="0">
<tr>
<td>
<table class="NormalText" runat="server"
id="tblNews" cellpadding="0" cellspacing="0">
</table>
</td>
</tr>
</table>

Now go to code behind of the page and write this code

using System;
using System.Data;
using System.Configuration;
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.Net;
using System.Xml;
using System.IO;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string rss =
"http://localhost:2923/RssFeed/Employees.aspx".ToString();
try
{
FetchRssFeeds(rss);
}
catch (Exception ex)
{
}
}
public void FetchRssFeeds(string rss)
{
// Read the RSS feed
WebRequest rssRequest = WebRequest.Create(rss);
WebResponse rssResponse = rssRequest.GetResponse();

Stream rssStream = rssResponse.GetResponseStream();

// Load XML Document
XmlDocument rssDocument = new XmlDocument();
rssDocument.Load(rssStream);

XmlNodeList rssList = rssDocument.SelectNodes("rss/channel/item");

string title = "";
string link = "";
string description = "";

// Loop through RSS Feed items
for (int i = 0; i < rssList.Count; i++)
{
XmlNode rssDetail;

rssDetail = rssList.Item(i).SelectSingleNode("title");
if (rssDetail != null)
{
title = rssDetail.InnerText;
}
else
{
title = "";
}

rssDetail = rssList.Item(i).SelectSingleNode("link");
if (rssDetail != null)
{
link = rssDetail.InnerText;
}
else
{
link = "";
}

rssDetail = rssList.Item(i).SelectSingleNode("description");
if (rssDetail != null)
{
description = rssDetail.InnerText;
}
else
{
description = "";
}

// Populate the HTML table rows and cells
HtmlTableCell cell = new HtmlTableCell();
cell.InnerHtml = "<b><a href='" + link + "' target='new'>"
+ title + "</a></b>";
HtmlTableRow trow = new HtmlTableRow();
trow.Cells.Add(cell);
tblNews.Rows.Add(trow);
HtmlTableCell cell2 = new HtmlTableCell();
cell2.InnerHtml = "<p align='justify'>" + description + "</p>";
HtmlTableRow trow2 = new HtmlTableRow();
trow2.Cells.Add(cell2);
tblNews.Rows.Add(trow2);
}
}
}

Save, build and run the project
Download the sample code




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