Automatic highlight menu for asp.net mvc.

admin — Tue, 12 Jan 2010 07:53:29 +0000

For a while now I've been wondering how to work out with the menu, so that it can automatic highlight with the least amount of code. So after a while, i come up with this. There are some part which I used the language helper I wrote in previous post. Just go ahead and replace it to whatever that suit your needs.

This one i place on top of my Partial that contain the menu to get the action and controller, so that i can pass this to the extension.

    < %  string currentAction = ViewContext.RouteData.Values["action"].ToString();
        string currentController = ViewContext.RouteData.Values["controller"].ToString(); %>

This is the sidebar Item, basically this will generate a "li" tag with a link and your custom class to indicate whether the link is currently used in the page / highlight. There is a if check in this method, it check for both current action and method if it actually fit the link.
so if you are doing a higher level menu item, in this case, a controller menu, you can just simply compare the controller instead of both.

    public static string SidebarItem(this System.Web.Mvc.HtmlHelper html, string currentAction, string currentController, string action, string controller, string languageKey, params object[] args)
    {
        TagBuilder tb = new TagBuilder("li");
        if (string.Equals(currentAction, action, StringComparison.OrdinalIgnoreCase) && string.Equals(currentController, controller, StringComparison.OrdinalIgnoreCase))
        {
            tb.GenerateId("activemenu");
        }
        string text = html.Language(languageKey, args);
        string link = html.ActionLink(text, action, controller).ToHtmlString();
        tb.SetInnerText("{0}");
        return String.Format(tb.ToString(), ""+link+"");
    }

And here is the actual sample usage of the code above:

    < %= Html.SidebarItem(currentAction, currentController, "index", "home", "index") %>

This help a lot when you create a menu that can automatic indicate whether you are in that page or not.

Adding CDN Functionality to ASP.net MVC

admin — Tue, 24 Nov 2009 11:52:55 +0000

I bet everyone develop webpage today are most likely to use a CDN for deliver images, video. Unlike in rails, MVC does not have a way to link with CDN, so i write this extension for your HtmlHelper so that you can easily link to a CDN that preconfig in your Web.config

First, we need to add the ff. to web.config

>
       key="cdn" value="cdn.ducdigital.com, cn.ducdigital.com" />
  >

and then use the ff class:

public static class CDNHelperExtension
{
 
    public static string CDNLink(this HtmlHelper html, string path)
    {
        string[] CDN = ConfigurationSettings.AppSettings["cdn"].Replace(" ", "").Split(',');
        Random r = new Random();
        return CDNLink(html, path, r.Next(0, CDN.Count()));
    }
 
    public static string CDNLink(this HtmlHelper html, string path, int ServerNumber)
    {
        string[] CDN = ConfigurationSettings.AppSettings["cdn"].Replace(" ", "").Split(',');
        if (ServerNumber >= CDN.Count())
            ServerNumber = 0;
        return "http://" + CDN[ServerNumber] + path;
    }
}

in your View, just call:

< %= Html.CDNLink("/images/") %>

Good luck!

DucDigital » extension

Automatic highlight menu for asp.net mvc.

Adding CDN Functionality to ASP.net MVC