ASP.NET: ActionLink return relative url

Question

I'm new to working on MVC2 asp.net projects.

I was wondering, is it possible to have an action link like this:

<%: Html.ActionLink("[Add To Cart]", "../StoreCart/AddToCart", new { id = Model.id })%>

Note the ../StoreCart.

Here's a returned URL example (I am currently in StoreScreen when I see the ActionLink, but I would like to get out, "one level up" so to speak):

Bad (404): http://localhost:8231/StoreScreen/StoreCart/AddToCart?id=9

Desired: http://localhost:8231/StoreCart/AddToCart?id=9

Thanks!

PS: Why can't you just do a php like thing and write a custom <a href="<%: index + "/StoreCart/AddToCart?id=" + id %>" > add to cart </a> :)

Answer 1

The ActionLink is not intended to point to a physical URL, rather a action in a controller.

<%: Html.ActionLink("[Add To Cart]", "AddToCart", "StoreCart", new { id = Model.id }, null)%>

Note: The final null is needed as this override of the ActionLink requires it. It is the model, and can be an object or null.

Docs

Answer 2

You shouldn't be passing ../StoreCart/AddToCart as argument to an ActionLink. The second argument of an ActionLink is the action name and I highly doubt that your action is called ../StoreCart/AddToCart.

So what you want is (which would use the same controller as the current request url):

<%: Html.ActionLink("[Add To Cart]", "AddToCart", new { id = Model.id }) %>

and if you wanted to set a specific controller just use the proper overload:

<%: Html.ActionLink(
     "[Add To Cart]", 
     "AddToCart", 
     "StoreCart", 
     new { id = Model.id }, 
     null
) %>

And here's a list of all available overloads I would recommend you checking out.