URL.Action() including route values

I have an ASP.Net MVC 4 app and am using the Url.Action helper like this: @Url.Action("Information", "Admin")

This page is used for both adding a new and edit an admin profile. The URLs are as follows:

 Adding a new: Editing Existing: <==Admin ID

When I'm in the Editing Existing section of the site and decide that I would like to add a new admin I click on the following link:

 <a href="@Url.Action("Information", "Admin")">Add an Admin</a>

The problem however that the above link is actually going to . This only happens when I'm in that page editing an existing admin. Anywhere else on the site it links correctly to

Has anyone else seen this?

UPDATE:

RouteConfig:

 routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); 

2 Answers

outgoing url in mvc generated based on the current routing schema.

because your Information action method require id parameter, and your route collection has id of your current requested url(/Admin/Information/5), id parameter automatically gotten from existing route collection values.

to solve this problem you should use UrlParameter.Optional:

 <a href="@Url.Action("Information", "Admin", new { id = UrlParameter.Optional })">Add an Admin</a>

You also can use in this form:

<a href="@Url.Action("Information", "Admin", null)"> Admin</a>