RouteLink in HtmlHelper?

How can I make up a RouteLink in a custom HtmlHelper? I know how to make it in a partial view but I want to build up a new link in a custom htmlhelper extension method with the use of a RouteLink. How to accomplish this?

Update: I noticed HtmlHelper.GenerateRouteLink. 开发者_如何学编程But what do I need to put in as parameters?

Here's an example. Let's suppose that you want to wrap the links into a div tag with some given class so that your resulting html looks like this:

<div class="foo"><a href="/home/index">Some text</a></div>

You could write the following extension method:

public static class HtmlExtensions
{
    public static MvcHtmlString CustomRouteLink(
        this HtmlHelper htmlHelper, 
        string className, 
        string linkText, 
        object routeValues
    )
    {
        var div = new TagBuilder("div");
        div.MergeAttribute("class", className);
        div.InnerHtml = htmlHelper.RouteLink(linkText, routeValues).ToHtmlString();
        return MvcHtmlString.Create(div.ToString());
    }
}

which could be used like this:

<%= Html.CustomRouteLink("foo", "Some text", 
    new { action = "index", controller = "home" }) %>

and this will produce the desired markup. Any other overloads of RouteLink could be used if necessary.

Once you get an instance of the UrlHelper you should be able to do whatever you want to do in your HtmlHelper method

UrlHelper url = new UrlHelper(helper.ViewContext.RequestContext);