ASP.NET MVC 2 Parameter Array

Question

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.

Jeroen · Accepted Answer · 2010-09-04 15:30:47Z

15

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() }) %>

edited Sep 4, 2010 at 15:30

answered Sep 3, 2010 at 10:28

Jeroen

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3 Comments

Sonia Over a year ago

I haven't checked that yet but it seems to work. What about rendering a route link? I would like to pass an array as route data. Any Ideas?

Jeroen Over a year ago

I've added an approach to the post.

Sonia Over a year ago

Works perfectly! It is a matter of style but instead of using writing urlBuilder, I used string.Join("/", strArray). Thank you

Cioxideru · Accepted Answer · 2012-11-28 15:25:36Z

1

for this problem your need to use strongly typed urlBuilder. Like T4MVC

answered Nov 28, 2012 at 15:25

Cioxideru

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1 Comment

Rup Over a year ago

Why would that help? Can you give an example?

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