Generate Error Response ASP.NET MVC

generateErrorResponse.cs

private static void generateErrorResponse(int number, string message, TextWriter textWriter)
{
	string element = (number > 0) ? "error" : "message";
	string elementValue = (number > 0) ? number.ToString() : message;

	XElement xml = new XElement("response",
		new XElement(element, elementValue));

	writeXmlToStream(textWriter, xml);
}

generateSuccessResponse.cs

private static void generateSuccessResponse(TextWriter textWriter, 
						string title, 
						Uri link, 
						string description, 
						string language)
{
	XElement xml = 
		new XElement("response",
			new XElement("error", "0"),
			new XElement("rss",
				 new XAttribute("version", "0.91"),
				 new XElement("channel",
					  new XElement("title", title),
					  new XElement("link", link.AbsolutePath),
					  new XElement("description", description),
					  new XElement("language", language))));

	writeXmlToStream(textWriter, xml);
}

mapRoute.cs

 routes.MapRoute
 (
	"Trackback",
	"LinkBack/ProcessRequest/{trackBackController}/{trackBackAction}/{trackBackID}",
	new
	{
		controller = "LinkBack",
		action = "ProcessRequest",
		trackBackController = "",
		trackBackAction = "",
		trackBackID = ""
	}
);

rdfOutput.xml

 <!--
<RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
		xmlns:dc="http://purl.org/dc/elements/1.1/" 
		xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" 
		xmlns="rdf">
	<Description rdf:about="http://www.rrreese.com/Article/Show/ASP.NET MVC TrackBack Implementation" 
			dc:identifier="http://www.rrreese.com/Article/Show/ASP.NET MVC TrackBack Implementation" 
			dc:title="ASP.NET MVC TrackBack Implementation" 
			trackback:ping="http://www.rrreese.com/LinkBack/ProcessRequest/Artice/Show/ASP.NET MVC TrackBack Implementation" />
</RDF>
 -->

responseError.xml

<?xml version="1.0" encoding="utf-8"?>
<response>
	<error>1</error>
	<message>The error message</message>
</response>

TrackbackMVC.cs

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult ProcessRequest()
{
	LinkBack linkBack = new LinkBack { ID = Guid.NewGuid(), CreationDate = DateTime.Now };

	//Retreave routing information
	string controler = Url.RequestContext.RouteData.Values["trackBackController"].ToString();
	string action = Url.RequestContext.RouteData.Values["trackBackAction"].ToString();
	string id = Url.RequestContext.RouteData.Values["trackBackID"].ToString();

	HttpRequestBase request = Url.RequestContext.HttpContext.Request;
	HttpResponseBase response = Url.RequestContext.HttpContext.Response;

	response.Buffer = false;
	response.Clear();
	response.ContentType = "application/xml";

	//Extract data from HTTP request
	if (!string.IsNullOrEmpty(request["url"]))
	{
		linkBack.LinkingPostUrl = request["url"];
		linkBack.Title = request["url"] + "@" + DateTime.Now.ToLongTimeString();
	}
	else
	{
		generateErrorResponse(1, "URL is missing", response.Output);
	}

	if (!string.IsNullOrEmpty(request["blog_name"]))
		linkBack.LinkingSiteName = request["blog_name"];

	if (!string.IsNullOrEmpty(request["title"]))
		linkBack.LinkingPostTitle = request["title"];

	if (!string.IsNullOrEmpty(request["excerpt"]))
		linkBack.LinkingPostExcerpt = request["excerpt"];

	linkBack.Save();
	generateSuccessResponse(response.Output, 
				id, 
				new Uri("http://www.rrreese.com/" + controler + "/" + action + "/" + id), 
				"", 
				"en-US");

	return new EmptyResult();
}

TrackbackResponse.xml

<?xml version="1.0" encoding="utf-8"?>
<response>
	<error>0</error>
</response>

writeXmlToStream.cs

private static void writeXmlToStream(TextWriter textWriter, XElement xml) 
{
	//Turn off Byte Order Mark (BOM)
	XmlWriterSettings xmlWriterSettings = new XmlWriterSettings { Encoding = new UTF8Encoding(false) };
	using (XmlWriter xmlWriter = XmlWriter.Create(textWriter, xmlWriterSettings))
	{
		xml.WriteTo(xmlWriter);
		xmlWriter.Flush();
	}
}

xmlGeneration.cs

XNamespace rdf = "rdf";
XNamespace dc = "dc";
XNamespace trackback = "trackback";

XElement xml = new XElement(rdf + "RDF",
				new XAttribute(XNamespace.Xmlns + "rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"),
				new XAttribute(XNamespace.Xmlns + "dc", "http://purl.org/dc/elements/1.1/"),
				new XAttribute(XNamespace.Xmlns + "trackback", "http://madskills.com/public/xml/rss/module/trackback/"),
				new XElement(rdf + "Description",
					new XAttribute(rdf + "about", "http://www.rrreese.com/Article/Show/" + article.Title),
					new XAttribute(dc + "identifier", "http://www.rrreese.com/Article/Show/" + article.Title),
					new XAttribute(dc + "title", article.Title),
					new XAttribute(trackback + "ping", "http://www.rrreese.com/LinkBack/ProcessRequest/Artice/Show/" + article.Title)));