Make an Html.ActionLink around an Image in ASP.NET MVC

<a href="<%= Url.Action("ActionName", "ControllerName") %>">
    <img src="<%= Url.Content("~/Content/img/imgname.jpg") %>" /></a>

public static string ActionLinkWithImage(this HtmlHelper html, string imgSrc, string actionName)
{
    var urlHelper = new UrlHelper(html.ViewContext.RequestContext);

    string imgUrl = urlHelper.Content(imgSrc);
    TagBuilder imgTagBuilder = new TagBuilder("img");
    imgTagBuilder.MergeAttribute("src", imgUrl);
    string img = imgTagBuilder.ToString(TagRenderMode.SelfClosing);

    string url = UrlHelper.Action(actionName);

    TagBuilder tagBuilder = new TagBuilder("a") {
        InnerHtml = img
    };
    tagBuilder.MergeAttribute("href", url);

    return tagBuilder.ToString(TagRenderMode.Normal);
}