Hierarchical MVC routing

gistfile1.cs

var router = new ApiRouter("api").DispatchTo<RootController>()
        .Add(new ApiRouter("Contacts").DispatchTo<ContactsController>())

        .Add(new ApiRouter("Contact").WithHandler(new LoggingHandler())
             .Add(new ApiRouter("{contactid}")
                    .WithConstraint("contactid", @"\d+")
                    .DispatchTo<ContactController>()

                    .Add(new ApiRouter("Address")
                            .Add(new ApiRouter("{addressid}")
                                       .WithConstraint("addressid", @"\d+")
                                       .DispatchTo<AddressController>()
                                )
                        )
                  )
             );

// or

var router = new ApiRouter("api").DispatchTo<RootController>()
    .Add(new ApiRouter("Contacts").DispatchTo<ContactsController>())
    .Add(new ApiRouter("Contact({contactid})")
                .WithConstraint("contactid", @"\d+")
                .WithHandler(new LoggingHandler())
                .DispatchTo<ContactController>()
                      
            .Add(new ApiRouter("Address({addressid})")
                    .WithConstraint("addressid", @"\d+")
                    .DispatchTo<AddressController>()
                )
        );