.NET MVC routing - catchall at start of route?

Question

Is there any way I can match:

/a/myApp/Feature

/a/b/c/myApp/Feature

/x/y/z/myApp/Feature

with a route that doesn\'t specifically know wha

Answer 1

You can use a constraint for that,

public class AppFeatureUrlConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
    {
        if (values[parameterName] != null)
        {
            var url = values[parameterName].ToString();
            return url.Length == 13 && url.EndsWith("myApp/Feature", StringComparison.InvariantCultureIgnoreCase) ||
                    url.Length > 13 && url.EndsWith("/myApp/Feature", StringComparison.InvariantCultureIgnoreCase);
        }
        return false;
    }
}

using it as,

routes.MapRoute(
    name: "myAppFeatureRoute",
    url: "{*url}",
    defaults: new { controller = "myApp", action = "Feature" },
    constraints: new { url = new AppFeatureUrlConstraint() }
    );

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

then the following urls should be intercepted by Feature action

/a/myApp/Feature

/a/b/c/myApp/Feature

/x/y/z/myApp/Feature

hope this helps.