MVC 5 Custom Route - Error 404 in LegacyRoute: RouteBase (example from the book Pro ASP.NET MVC 5 from Apress in Chapter 16)
Code presented in the book Pro ASP.NET MVC 5 from Apress in Chapter 16 (Inbound URL Routing). The example is for legacy URLs. Then I will deliver code samples for custom route, routing, controller and view.
LegacyRoute.cs
using System;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
namespace UrlsAndRoutes.Infrastructure
{
public class LegacyRoute : RouteBase
{
private string[] urls;
public LegacyRoute(params string[] targetUrls)
{
urls = targetUrls;
}
public override RouteData GetRouteData(HttpContextBase httpContext)
{
RouteData result = null;
string requestedURL = httpContext.Request.AppRelativeCurrentExecutionFilePath;
if (urls.Contains(requestedURL, StringComparer.OrdinalIgnoreCase))
{
result = new RouteData(this, new MvcRouteHandler());
result.Values.Add("controller", "Legacy");
result.Values.Add("action", "GetLegacyURL");
result.Values.Add("legacyURL", requestedURL);
}
return result;
}
public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
VirtualPathData result = null;
if (values.ContainsKey("legacyURL") && urls.Contains((string)values["legacyURL"], StringComparer.OrdinalIgnoreCase))
{
result = new VirtualPathData(this, new UrlHelper(requestContext).Content((string)values["legacyURL"]).Substring(1));
}
return result;
}
}
}
RouteConfig.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Mvc.Routing.Constraints;
using UrlsAndRoutes.Infrastructure;
namespace UrlsAndRoutes
{
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.MapMvcAttributeRoutes();
//routes.MapRoute("NewRoute", "App/Do{action}", new { controller = "Home", id = UrlParameter.Optional });
//routes.Add(new Route("SayHello", new CustomRouteHandler()));
routes.Add(new LegacyRoute("~/articles/Windows_3.1_Overview.html", "~/old/.NET_1.0_Class_Library"));
routes.MapRoute("MyRoute", "{controller}/{action}", new { controller = "Home", action = "Index" });
routes.MapRoute("MyOtherRoute", "App/{action}", new { controller = "Home" });
}
}
}
LegacyController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace UrlsAndRoutes.Controllers
{
public class LegacyController : Controller
{
public ActionResult GetLegacyURL(string legacyURL)
{
return View((object)legacyURL);
}
}
}
GetLegacyURL.cshtml
@model string
@{
ViewBag.Title = "GetLegacyURL";
Layout = null;
}
<h2>GetLegacyURL</h2>
The URL requested was: @Model
I cannot figure out how it works. I always get 404 error ( http: //my.machine/articles/Windows_3.1_Overview.html ). The method in GetRouteData in LegacyRoute.cs is never called. If I delete. with url the code works fine. Can anyone provide advice or help?
It's strange that nobody complains that the code doesn't work.
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Page 445 provides a solution. You need to edit your IIS Express settings.
Right click on the IIS Express icon in the taskbar while the application is running -> Show all applications -> Click on the site you want to configure -> Click on the config file
Search System.Web.Routing.UrlRoutingModule
Remove the value of the preCondition attribute so that the line becomes <add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition="" />
Reload the app and you're ready to go.
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routes.MapMvcAttributeRoutes ();
routes.Add(new LegacyRoute("~/articles/Windows_3.1_Overview.html/",
"~/old/.NET_1.0_Class_Library/"));
routes.MapRoute("MyRoute", "{controller}/{action}", new { controller = "Home" ,action="index" });
routes.MapRoute("MyOtherRoute", "App/{action}", new { controller = "Home" });
Try with the above code, it should work.
Malinda Sanjaka
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