How do I access the id parameter from the ActionLink?

Question

The issue is that id = 5 is already in the URL as http://localhost:4032/Category/5. But to pass that value to the ActionLink it seems I have to do this:

<td> @Html.ActionLink(p.ProdNo, "Main", "Home", new { id = 5, prodno = p.ProdNo }, null) </td>

Which results in the correct URL: http://localhost:4032/Main/5/1097

But having to do that doesn't seem very right. I know there must be some clever way to handle this. Unfortunately, it's late in the day and I'm all out of clever.

I tried this:

<td> @Html.ActionLink(p.ProdNo, "Main", "Home", new {prodno = p.ProdNo }, null) </td>

But ended up with http://localhost:4032/Main?prodno=1097.

I tried adding the parameters to the corresponding method in the codebehind but that didn't seem to work either.

So in short, when using an ActionLink how do I get the routevalue already in the URL AND pass in another/new routevalue?

Global.asax

public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                "Sections", // Route name
                "{controller}/{action}/{id}/{prodno}/{instid}/{section}", // URL with parameters
                new { controller = "TestEdit", action = "Index", id = UrlParameter.Optional, prodno = UrlParameter.Optional, instid = UrlParameter.Optional, section = UrlParameter.Optional } // Parameter defaults
            );

            routes.MapRoute(
                "Pumps", // Route name
                "{controller}/{action}/{id}/{prodno}", // URL with parameters
                new { controller = "Home", action = "Main", id = UrlParameter.Optional, prodno = UrlParameter.Optional  } // Parameter defaults
            );

            routes.MapRoute(
                "Jobs", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Jobs", id = UrlParameter.Optional } // Parameter defaults
            );

            routes.MapRoute(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
            );

        }

@DotNet.....is Category the Model behind the View that your code is copied from? If so, does Category.Id = 5? — MikeTWebb, Jul 16 '12 at 21:34

score 1 · Answer 1 · edited May 23 '17 at 10:09

1

I think you need to set up the route for your prodno-parameter. Looks like this thread could contain a solution:

Routing with Multiple Parameters using ASP.NET MVC

edited May 23 '17 at 10:09

Community

1
1

answered Jul 16 '12 at 21:29

Markus Knappen Johansson

1,461
17
19

Your last example dosent contain a value for the id parameter? – Markus Knappen Johansson Jul 16 '12 at 22:12
I know. I was showing the URL it was producing and that is wrong. – dotnetN00b Jul 16 '12 at 22:34

score 1 · Answer 2 · answered Jul 17 '12 at 06:20

1

You could fetch it from the RouteData:

@Html.ActionLink(
    p.ProdNo, 
    "Main", 
    "Home", 
    new { id = ViewContext.RouteData["id"], prodno = p.ProdNo }, 
    null
)

answered Jul 17 '12 at 06:20

Darin Dimitrov

1,023,142
271
3,287
2,928

Is this the normal way of handling it? – dotnetN00b Jul 17 '12 at 18:14
The normal way is to use view models. But this could also do the job. – Darin Dimitrov Jul 18 '12 at 05:35

How do I access the id parameter from the ActionLink?

2 Answers2