Sitemap.ashx

<%@ WebHandler Language="C#" Class="Sitemap" %>

using System;
using System.Web;
using System.Linq;
using System.Collections.Generic;
using System.Xml.Linq;
using Umbraco.Core;
using Umbraco.Core.Models;
using Umbraco.Web;

public class Sitemap : IHttpHandler
{

    /* Generates an XML Sitemap for Umbraco using LinqToXml */

    private static readonly XNamespace xmlns = "http://www.sitemaps.org/schemas/sitemap/0.9";

    public void ProcessRequest(HttpContext context)
    {
        // Set correct headers from XML
        context.Response.ContentType = "text/xml";
        context.Response.Charset = "utf-8";

        // Get the absolute base URL for this website
        Uri url = HttpContext.Current.Request.Url;
        string baseUrl = String.Format("{0}://{1}{2}", 
            url.Scheme, url.Host, url.IsDefaultPort ? String.Empty : ":" + url.Port);

        // Create a new XDocument using namespace and add root element
        XDocument doc = new XDocument(new XDeclaration("1.0", "utf-8", "yes"));
        XElement urlset = new XElement(xmlns + "urlset");

        UmbracoHelper umbHelper = new UmbracoHelper(UmbracoContext.Current);

        // Get the root no
        var rootNodes = umbHelper.TypedContentAtRoot().Where(n => n.TemplateId > 0);

        // Iterate all nodes in site and add them to document
        RecurseNodes(urlset, rootNodes, baseUrl);
        doc.Add(urlset);

        // Write XML document to response stream
        context.Response.Write(doc.Declaration + "\n");
        context.Response.Write(doc.ToString());
    }

    // Method to recurse all nodes and create each element
    private static void RecurseNodes(XElement urlset, IEnumerable<IPublishedContent> nodes, string baseUrl)
    {
        foreach (IPublishedContent n in nodes)
        {
            if (n.TemplateId > 0)
            {
                string url = n.UrlAbsolute();

                if (!url.StartsWith("http"))
                {
                    url = baseUrl + url;
                }

                // Create the XML node
                XElement urlNode = new XElement(xmlns + "url", 
                    new XElement(xmlns + "loc", url), 
                    new XElement(xmlns + "lastmod", n.UpdateDate.ToUniversalTime()));
                urlset.Add(urlNode);
            }

            // Check if the node has any child nodes and, if it has, recurse them
            if (n.Children() != null)
            {
                RecurseNodes(urlset, n.Children(), baseUrl);
            }
        }
    }


    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}