Asp.net Routing not working properly - asp.net

Question

I have written the following inside my RegisterRoutes() in Global.asax in webforms application.
I have an xml file called CacheInfo.xml that stores the details of cached pages.The default page has an entry in the xml called EnDefaultPage, which contains two child nodes.
The child node LastUpdationTimeStamp stores, last updation timestamp (unix timestamp in seconds ) of the cache for Default page.
The child node ExpiryTimestamp stores the timestamp at which the cache will be expired.So if the expiry timestamp is greater than lastupdation timestamp, the file from Cache will be loaded (Default.html).Currently the script is working, but it is not routing to the Default.html although the conditional block that defines the route is being executed.I couldn't find the exact reason behind the issue.Can anybody suggest me a fix.All the other routes are working perfectly.
My code is attached below.
ublic void RegisterRoutes(RouteCollection routes)
{
string relPath = "~/CacheInfo.xml";
string absPath = Server.MapPath(relPath);
XmlDocument xdoc = new XmlDocument();//xml doc used for xml parsing
xdoc.Load(
absPath
);//loading XML in xml doc
string nodeName="", nodeVal="",upStamp="0",expiry="0";
int iUpStamp,iExpiry;
upStamp = xdoc.GetElementsByTagName("EnDefaultPage")[0].SelectSingleNode("LastUpdationTimeStamp").InnerText;
expiry = xdoc.GetElementsByTagName("EnDefaultPage")[0].SelectSingleNode("ExpiryTimeStamp").InnerText;
iUpStamp = Convert.ToInt32(upStamp);
iExpiry = Convert.ToInt32(expiry);
if(!String.IsNullOrEmpty(upStamp)) {
if (iExpiry > iUpStamp)
{
System.Diagnostics.Debug.WriteLine("stamp is " + upStamp + " Expiry is " + expiry);
// routes.MapPageRoute("EnHome1", "", "~/en/DefaultCache.aspx");
routes.MapPageRoute("EHome", "en/", "~/en/Default.html");
//this routing is not working
}
else
{
}
}
routes.MapPageRoute("GArticle", "Gallery/{slug}", "~/Gallery/Article.aspx");
routes.MapPageRoute("GCategory", "Gallery/Categories/{slug}", "~/Gallery/Categories.aspx");
routes.MapPageRoute("GSlideShow", "Gallery/{slug}/{id}", "~/Gallery/SlideShow.aspx");
routes.MapPageRoute("Article", "en/{slug}", "~/english/Article.aspx");
routes.MapPageRoute("Category", "en/Categories/{slug}", "~/english/Categories.aspx");
routes.MapPageRoute("enFeed", "en/category/english/{slug}/feed", "~/en/feed.aspx");
routes.MapPageRoute("teFeed", "te/category/telugu/{slug}/feed", "~/te/feed.aspx");
routes.MapPageRoute("Tags", "en/Tags/{tag}", "~/english/Tags.aspx");
routes.MapPageRoute("tArticleHtml", "te/{slug}.html", "~/telugu/Article.aspx");
routes.MapPageRoute("tArticle", "te/{slug}", "~/telugu/Article.aspx");
routes.MapPageRoute("tCategoryHtml", "te/Categories/{slug}.html", "~/telugu/Categories.aspx");
routes.MapPageRoute("tCategory", "te/Categories/{slug}", "~/telugu/Categories.aspx");
routes.MapPageRoute("tTagsHtml", "te/Tags/{tag}.html", "~/telugu/Tags.aspx");
routes.MapPageRoute("tTags", "te/Tags/{tag}", "~/telugu/Tags.aspx");
}
}

Answer 1

If I read your intent correctly, you want the user to be directed to default any time their access is expired. If so, you can't get there from here.
RegisterRoutes is used to register routes as the application starts up.The last 3 words are the clue as to why certain logic will not work later in the application.
Now to your RegisterRoutes. Here is the logic.
Get expiration date
Get timestamp
If the expiration date is greater than last updated, when the application starts, route the user to default
If you truly mean "at startup determine whether to route every page that can be expired to default, every time" then you have the correct logic and it is working as expected. The fact you asked the question says that is not your intent. You want a decision made on a page access by page access basis. If I am correct, you can't do it in RegisterRoutes. You will have to implement the "caching logic" elsewhere.
My suggestion, rather than building this by hand, is look into software that handles caching.