MVC5 Attribute Routing

Question

I am trying to use Route Attributes to define the MVC Routing.

I have got the following code in the Controller..

[Route("MDT/Detail/{id}")] public JsonResult Detail(int? id) { ITS.Models.ComputerDetail cp = GetDataFromDatabase(id.Value); return Json(cp, JsonRequestBehavior.AllowGet); }

If I used this URL (http://localhost:6481/MDT/Detail?id=1245) it returns JSON data.

But If I used (http://localhost:6481/MDT/Detail/1245), it shows the error saying the variable id is Null.

Exception Details: System.InvalidOperationException: Nullable object must have a value.

Could you please help me how I could achieve {Controller}/{Action}/{ID} routing by using Routing Attribute?

To enable attribute routing, call MapMvcAttributeRoutes during configuration. — Sanjay Bhardwaj
– Sanjay Bhardwaj, Commented Oct 14, 2015 at 7:18

Sk93 · Accepted Answer · 2015-10-14 07:20:26Z

4

Have you enabled attribute routing by adding this line:

routes.MapMvcAttributeRoutes();

in RegisterRoutes?

answered Oct 14, 2015 at 7:20

Sk93

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Sanjay Bhardwaj · Accepted Answer · 2015-10-14 07:21:27Z

Please try below code, it might helpful for you,

public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapMvcAttributeRoutes(); AreaRegistration.RegisterAllAreas(); routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); }

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