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> :)

Dustin Laine · Accepted Answer · 2011-05-21 22:32:55Z

6

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

answered May 21, 2011 at 22:32

Dustin Laine

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1 Comment

Spectraljump Over a year ago

thanks for pointing out the ", null" parameter, I hadn't noticed it :P

Darin Dimitrov · Accepted Answer · 2011-05-21 22:40:49Z

4

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.

edited May 21, 2011 at 22:40

answered May 21, 2011 at 22:30

Darin Dimitrov

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4 Comments

Spectraljump Over a year ago

I've already tried that, and thought it's not the right way. BEcause when I use what you suggested, I get this url: http://localhost:8231/StoreScreen/AddToCart?Length=9 (StoreScreen instead of StoreCart) and also, how about this Lenght=9 thing? It's the length of the parameter string I pass for the routeValue: "StoreCart"

Darin Dimitrov Over a year ago

@Twodordan, oh, that's due to your routing configuration. The ActionLink simply uses your routes.

Spectraljump Over a year ago

Sorry, my bad, didn't see the null

Darin Dimitrov Over a year ago

@Twodordan, yeah, the null at the end indicates the htmlAttributes parameter. Allows you to pass stuff like @class, etc to this anchor element.

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