Tue, 11 August 2009

Sometimes its useful to be able target html elements on a particular page or you want to have specific styling according to a particular area, controller or action.

Here is a small extension to use route data to do just that. 

namespace Antix.Web.Mvc {

 public static class Extentions {

  /// <summary>
  /// <para>Get a string from the route data</para>
  /// </summary>
  public static string RouteString(
      this ViewContext context, string template) {

   foreach (var value in context.RouteData.Values) {

    template = template.Replace(string.Format("{{{0}}}", 
            value.Key.ToLower()),
            value.Value == null
                ? string.Empty
                : value.Value.ToString().ToLower());
   }

   return template;
  }
 }
}

Making sure that the extension is in scope;
by importing on your page 

<%@ Import Namespace="Antix.Web.Mvc"%>

or adding to you web.config 

<configuration>
 <system.web>
  <pages>
   <namespaces>
    <add namespace="Antix.Web.Mvc"/>
   </namespaces>
  </pages>
 </system.web>
<configuration>

Call the function to retrieve the route data in a particular format like so... 

<body class="<%= ViewContext.RouteString("{controller}_{action}") %>">

I've used this in the master page of my site to identify a page Body tag by controller and action.

<blog class="home_blogentry">

ASP.NET MVC, Development, CSS

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