Page.RouteData is null or Page not found in URL routing

If we are using ASP.NET URL rewriting concept, you might Registered routes correctly in Global.aspx like below

protected void Application_Start(object sender, EventArgs e)     {         RegisterRoutes(RouteTable.Routes);     }   public static void RegisterRoutes(RouteCollection routeCollection)     {         routeCollection.MapPageRoute("RouteArticle", "Articles/{Id}", "~/Resources/ViewArticle.aspx"); }

 ViewArticle.aspx.cs:

int resourceContentID = int.Parse(Page.RouteData.Values["Id"].ToString());

 
From the browser if you try to access the page(http://localhost/website/articles/13) ,sometimes we will get run time error as Page.RouteData as null or HTTP page not found in browser.

In order to avoid the error add below section to web.config file. 

<configuration>

       <system.webServer>

              <modules runAllManagedModulesForAllRequests="true"/>

       </system.webServer>

</configuration>