String parameter not being populated using URL routing

Question

URL rewriting issue. When i call me url using the following link

http://localhost:12719/product/18

it works fine the product 18 links to the parameter. However when i call it using the following.

http://localhost:12719/product/apple

It doesn't map the apple product name to the controller, it thinking that your trying to invoke a action of type apple.

Why does it map numeric and not string to the controller parameter? The controller parameter is an type of string.

Routing are as below.

routes.MapRoute(
    name: "product",
    url: "product/{id}/{slug}",
    defaults: new { controller = "product", action = "product", slug = UrlParameter.Optional },
    constraints: new { id = @"\d+" }
);

PSL · Accepted Answer · 2013-05-19 07:18:26Z

1

You have specified id to be only numeric in the regex specified in the constraint. constraints: new { id = @"\d+" } remove it and should work. So since "product" doesnot pass \d+ test you will get the id as null in the action.

routes.MapRoute(
    name: "product",
    url: "product/{id}/{slug}",
    defaults: new { controller = "product", action = "product", slug = UrlParameter.Optional }

);

answered May 19, 2013 at 7:18

PSL

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2 Comments

Raju Kumar Over a year ago

doesn't work :( is there a way to change the regex type to string? error im getting. The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult

PSL Over a year ago

Change the type of id from int to string in your action.

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