The requirement was to consume a RSS feed and show the top 5 feeds in the page(in a sub section).
Create a Web User Control:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="RssFeed.ascx.cs" Inherits="_controls_rss_feed" %>
<asp:Repeater ID="rptRssFeed" runat="server" >
<asp:Repeater ID="rptRssFeed" runat="server" >
<ItemTemplate>
<li>
<h4><asp:Literal ID="litTitle" runat="server" Text='<%# Eval("Title") %>' /></h4>
<p><asp:Literal ID="litDescription" runat="server" Text='<%# Eval("Description") %>' /></p>
<asp:HyperLink ID="hypLink" Text="Read More" runat="server" NavigateUrl='<%# Eval("Link") %>' target="_blank" />
</li>
</ItemTemplate>
</asp:Repeater>
Code Behind:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _controls_RssFeed : System.Web.UI.UserControl
public partial class _controls_RssFeed : System.Web.UI.UserControl
{
# region Properties
public string FeedUrl { get; set; }
#endregion Properties
#region Page Event
protected void Page_Load(object sender, EventArgs e)
{
//Loads the RSS feed
XElement rootElement = XElement.Load(FeedUrl);
//Queries to pick the top 5 feeds/items order by date DESC - LINQ
//Queries to pick the top 5 feeds/items order by date DESC - LINQ
var feedItems = (from item in rootElement.Descendants("item")
orderby DateTime.Parse(item.Element("pubDate").Value) descending
select new
{
Title = item.Element("title").Value,
Description = item.Element("description").Value,
Published = DateTime.Parse(item.Element("pubDate").Value),
Link = item.Element("link").Value
}).Take(5);
//DataSource for the Repeater Control.
this.rptRssFeed.DataSource = feedItems;
this.rptRssFeed.DataBind();
}
#endregion Page Event
}
So now the Re-Usable Web User Control is developed and ready to use across the application.
Create a Page and Inherit the Web User Control:
Just register the control and use it as as when needed. Here is the page code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register src="_controls/RssFeed.ascx" tagname="RssFeed" tagprefix="uc" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc:RssFeed ID="ctrRssFeed" runat="server" FeedUrl="http://rss.news.yahoo.com/rss/sports" />
</div>
</form>
</body>
</html>
So now the Re-Usable Web User Control is developed and ready to use across the application.
Create a Page and Inherit the Web User Control:
Just register the control and use it as as when needed. Here is the page code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register src="_controls/RssFeed.ascx" tagname="RssFeed" tagprefix="uc" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc:RssFeed ID="ctrRssFeed" runat="server" FeedUrl="http://rss.news.yahoo.com/rss/sports" />
</div>
</form>
</body>
</html>
We have successfully created a control consuming a Rss Feed and inherited the control to the page. I hope
this would have helped you or served your purpose.
Have fun and happy coding.
