public static void AliasRouteEx(this RouteCollection routes, string alias, string url, object aliasConstraints, Func <RouteData, RouteData, RouteData> routeDataJoiner)
{
if (routes == null)
{
throw new ArgumentNullException("routes");
}
if (alias == null)
{
throw new ArgumentNullException("alias");
}
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
if (routeDataJoiner == null)
{
throw new ArgumentNullException("routeDataJoiner");
}
#if CLR4
EnsureRouteCollectionReaderWriterLock(routes);
#endif
routes.Add(new AliasRouteExInternal(alias, () => routes.FindRouteDataByUrl(HttpContext.Current, url), routeDataJoiner)
{
Constraints = new RouteValueDictionary(aliasConstraints)
});
}