razor html helper for action link with span

HtmlHelperExtensions

public static class HtmlHelperExtensions
{
	public static MvcHtmlString IconActionLink(this HtmlHelper htmlHelper, string linkText, string iconClass,
		string actionName, string controllerName)
	{
		return IconActionLink(htmlHelper, linkText, iconClass, string.Empty, actionName, controllerName, null);
	}

	public static MvcHtmlString IconActionLink(this HtmlHelper htmlHelper, string linkText, string iconClass, string actionName, string controllerName, IDictionary<string, object> htmlAttributes)
	{
		return IconActionLink(htmlHelper, linkText, iconClass, string.Empty, actionName, controllerName, null);
	}

	public static MvcHtmlString IconActionLink(this HtmlHelper htmlHelper, string linkText, string iconClass,
		string iconContent,
		string actionName, string controllerName)
	{
		return IconActionLink(htmlHelper, linkText, iconClass, iconContent, actionName, controllerName, null);            
	}

	public static MvcHtmlString IconActionLink(this HtmlHelper htmlHelper, string linkText, string iconClass, string iconContent,
		string actionName, string controllerName, IDictionary<string, object> htmlAttributes)
	{
		string url = UrlHelper.GenerateUrl(null, actionName, controllerName, null, null, null, null, htmlHelper.RouteCollection, htmlHelper.ViewContext.RequestContext, true);
		TagBuilder tagBuilder = new TagBuilder("a")
		{
			InnerHtml = (!String.IsNullOrEmpty(linkText)) ? HttpUtility.HtmlEncode(linkText) : String.Empty
		};
		tagBuilder.MergeAttributes(htmlAttributes);
		tagBuilder.MergeAttribute("href", url);

		TagBuilder iconTagBuilder = new TagBuilder("span");
		iconTagBuilder.MergeAttribute("class", iconClass);
		iconTagBuilder.SetInnerText(iconContent);
		tagBuilder.InnerHtml += " " + iconTagBuilder.ToString(TagRenderMode.Normal);

		return MvcHtmlString.Create(tagBuilder.ToString(TagRenderMode.Normal));
	}
}