Correctly making an ActionLink extension with htmlAttributes

Question

I use a custom extension for my ActionLinks. I have added an attribute data_url which is meant to be translated to an attribute of data-url. This i

Answer 1

You could use the AnonymousObjectToHtmlAttributes method which does exactly what you want and you don't need any custom extension methods:

public static MvcHtmlString ActionLink(
    this AjaxHelper helper, 
    string linkText, 
    RouteValueDictionary routeValues, 
    AjaxOptions ajaxOptions, 
    object htmlAttributes = null
)
{
    return helper.ActionLink(
        linkText,    
        routeValues["Action"].ToString(), 
        routeValues["Controller"].ToString(), 
        routeValues, 
        ajaxOptions, 
        htmlAttributes == null ? null : HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes)
    );
}