Optional routing parameter with constraint in ASP.NET MVC 2?

Question

If I have a route like this:

routes.Add(new Route(\"{controller}/{page}\", 
    new RouteValueDictionary
    {
        { \"page\", UrlParameter.Optional }
           


        

Answer 1

I'm using ^$| within a regex, such as: (^$|[Pp]age\d+). I found this question while searching for an answer to this and figured I'd add what I found here.

routes.MapRoute(
  name: "News Archive",
  url: "News/{page}",
  defaults: new { controller = "news", action = "List", page= UrlParameter.Optional },
  constraints: new { page= @"^$|[0-9][0-9]" });