asp.net mvc route constraints regular expression - regex

Question

I want to server dynamic pages using url without controller and action on the basis of page title
default url : domain.com/pages/details/1
I want this to be server as
domain.com/title-of-dynamic-page-in-db-space-replaced-with-dash
domain.com/about-us
domain.com/contact-us
if I am doing this without dash than routing will confuse with controller name
thats why I added dash - for dynamic pages
my action looks like this
// GET: Pages/View/5
public ActionResult View(string id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Page page = db.Pages.First(p => p.name_english == id.Replace("-"," "));
if (page == null)
{
return HttpNotFound();
}
}
my routes are
routes.MapRoute(
name: "aaaaa",
url: "{id}",
defaults: new { controller = "pages", action = "view" },
constraints: new { id = #"^[A-Za-z\d-]+$" } //*********help needed in this line ******************************
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
above Constrain ^[A-Za-z\d-]+$
accepts alpha(optional) numeric(optional) and dash(optional)
while I need alpha(optional) numeric(optional) and dash(*mandatory*)
this way routing engine will not confuse page title with controller/action as I will make sure my name of dynamic page will contain space(i m replacing with dash)
and my controller/action will not be named contained dash
also tell me, is this approach ok or not, is there any other optimized solution for this?

Answer 1

I hope the following snippet will work for you.
routes.MapRoute(
name: "aaaaa",
url: "{id}",
defaults: new { controller = "pages", action = "view" },
constraints: new { id = #"^([-]*[a-zA-Z0-9]*-[a-zA-Z0-9]*[-]*)+$" } //*********this should work**
);
//---------------------------------------
// ^([-]*[a-zA-Z0-9]*-[a-zA-Z0-9]*[-]*)+$
//---------------------------------------