ASP.NET MVC 2 Parameter Array

Question

Hi, I need to have the following routing logic:

http://mydomain.com/myAction/{root}/{child1}/{child2}/...

I don't know what is the depth of the route so I want the action's signature to look something like that:

public ActionResult myAction(string[] hierarchy)
{
  ...
} 

Have no idea how to write that route. Help?

Thanks a lot.

Answer 1

When you add the following mapping:

routes.MapRoute("hierarchy", "{action}/{*url}"
    new { controller = "Home", action = "Index" });

you can obtain the string 'url' in your action method:

public ActionResult myAction(string url)
{
    ...
}

The hierarchy is then easily obtained:

string[] hierarchy = url.Split('/');

Creating an url from a list of string values can be done using a similair approach:

string firstPart = hierarchy.Count() > 0: hierarchy[0] : string.Empty;
StringBuilder urlBuilder = new StringBuilder(firstPart);
for (int index = 1; index < hierarchy.Count(); index++)
{
    urlBuilder.Append("/");
    urlBuilder.Append(hierarchy[index]);
}

urlBuilder can then be used in an action link, for example:

<%= Html.ActionLink("Text", new { Controller="Home", Action="Index", Url=urlBuilder.ToString() }) %>