MVC 3 Content with no cache

Simple helper:

public static class UrlHelperExtensions
{
 public static string ContentNoCache(this UrlHelper url, string path)
 {
  return url.Content("{0}?_dc={1}".FormatWith(path, DateTime.Now.ToFileTime()));
 }
}

where FormatWith:

public static string FormatWith(this string input, params object[] args)
{
 return string.Format(input, args);
}

Use:
<script src="@Url.ContentNoCache("~/Scripts/app.js")" type="text/javascript"></script>
Result:
<script src="/Scripts/app.js?_dc=129520920501677826" type="text/javascript"></script>