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Kentico CMS allows you to publish content using a RSS 2.0 feed. The default installation contains a simple CMSPages\NewsRss.aspx page that shows how to build your own RSS feed. It works with news items, but you can modify the code so that it displays a different type of documents.
The following figure shows the code of the rss.aspx page:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RSS.aspx.cs"
Inherits="RSSNews" %>
<%@ Register Assembly="CMS.Controls" Namespace="CMS.Controls"
TagPrefix="cc1" %><?xml version="1.0" encoding="utf-8" ?>
<rss version="2.0">
<channel>
<title>News RSS</title>
<link><![CDATA[<%=HttpContext.Current.Request.Url.AbsoluteUri.Remove(HttpContext.Current.Request.Url.AbsoluteUri.Length - HttpContext.Current.Request.Url.PathAndQuery.Length) + HttpContext.Current.Request.ApplicationPath%>]]></link>
<description>News RSS Feed</description>
<cc1:cmsrepeater ID="NewsRepeater" runat="server" OrderBy="NewsReleaseDate DESC" ClassNames="cms.news"
TransformationName="cms.news.rssitem" SelectedItemTransformationName="cms.news.rssitem"
Path="/news/%"></cc1:cmsrepeater>
</channel>
</rss>
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As you can see, the page contains only RSS elements with dynamic code. The RSS items are rendered using a CMSRepeater control with appropriate transformation.
The code behind looks like this:
[C#]
protected void Page_Load(object sender, EventArgs e)
{
Response.ContentType = "text/xml";
}
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This code changes the output content type to XML.
How to Create a RSS Feed for a Different Document Type
If you want to display articles instead of news in your RSS feed, you will need to follow these steps:
| 1. | Create a new ASPX page called articles_rss.aspx. |
| 2. | Copy and paste all code from the rss.aspx file except for the <%@ Page %> directive. |
| 3. | Change the following properties of the CMSRepeater control:
- SelectNodesOrderBy="DocumentModifiedWhen DESC"
- SelectNodesClassName="cms.article"
TransformationName="cms.article.rssitem"
SelectedItemTransformationName="cms.article.rssitem"
SelectNodesPath="/%"
SelectNodesWhere="" |
| 4. | Add the same line of code as used in the rss.aspx.cs code behind file (Response.ContentType = "text/xml") to articles_rss.aspx.cs. |
| 5. | Create the trasformation cms.article.rssitem like this in Site Manager -> Development -> Document Types -> ... edit Article ... -> Transformations: |
<item>
<guid isPermaLink="true"><![CDATA[<%# GetAbsoluteUrl(GetDocumentUrl()) %>]]></guid>
<title><![CDATA[<%# Eval("ArticleTitle") %>]]></title>
<description><![CDATA[<%# Eval("ArticleText") %>]]></description>
<pubDate><%# Convert.ToDateTime(Eval("DocumentModifiedWhen")).ToString("r") %></pubDate>
<link><![CDATA[<%# GetAbsoluteUrl(GetDocumentUrl()) %>]]></link>
</item>
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This code renders the particular items.
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