Help me get this ASP.NET MVC2 RC ActionLink to work? - asp.net-mvc

Question

I could have SWORN I had this working, but somewhere along the line I apparently broke it. Maybe it was during my migration from ASP.NET MVC in VS2008 to ASP.NET MVC2 in VS2010.
My ActionLink:
Html.ActionLink(segment.TitleWithChapterNumber, "Index", "Read", new { bookCode = Model.Product.Id, segmentCode = segment.Index }, null)
The route I expect it to match:
routes.MapRoute(
"Read",
"Read/{bookCode}/{segmentCode}/{sectionCode}/{renderStrategy}",
new { controller = "Read", action = "Index", bookCode = "", segmentCode = "", sectionCode = "", renderStrategy = "" }
);
This renders a link that looks like: http://localhost/Obr/Read?bookCode=14&segmentCode=0
But I want it to look like http://localhost/Obr/Read/14/0
Clicking the link that it renders does take me to the right controller and the response is accurate. If I paste in the link I WANT it to look like, it does work. I guess it's just not matching?
Am I missing something obvious? I've stared at it so long I don't even know what I am looking for anymore.
For reference, here are ALL of my routes:
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"ReadImage",
"Read/Image/{bookId}/{imageName}",
new { controller = "Read", action = "Image" }
);
routes.MapRoute(
"Read",
"Read/{bookCode}/{segmentCode}/{sectionCode}/{renderStrategy}",
new { controller = "Read", action = "Index", bookCode = "", segmentCode = "", sectionCode = "", renderStrategy = "" }
);
routes.MapRoute(
"BookReport",
"BookReport/{action}/{folder}",
new { controller = "BookReport", action = "Details", folder = "" }
);
routes.MapRoute(
"Reference",
"Reference/Details/{referenceType}/{searchText}",
new { controller = "Reference", action = "Details", referenceType = "", searchText = "" }
);
routes.MapRoute(
"PaginatedAudits", // Route name
"Audit/Page/{pageNumber}", // URL with parameters
new { controller = "Audit", action = "Index" } // Parameter defaults
);
routes.MapRoute(
"PaginatedReadLog", // Route name
"ReadLog/Page/{pageNumber}", // URL with parameters
new { controller = "ReadLog", action = "Index" } // Parameter defaults
);
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);
The action signature looks like this:
[Authorize]
public ActionResult Index(string bookCode, string segmentCode, string sectionCode, string renderStrategy)
{
// code
}

Answer 1

Try a route link by explicitly giving the name of the route:
Html.RouteLink(
segment.TitleWithChapterNumber, // linkText
"Read", // routeName
new {
bookCode = Model.Product.Id,
segmentCode = segment.Index
}, // routeValues
null // htmlAttributes
)

Answer 2

Your route definitions should have UrlParameter.Optional instead of empty strings.
routes.MapRoute(
"Read",
"Read/{bookCode}/{segmentCode}/{sectionCode}/{renderStrategy}",
new { controller = "Read", action = "Index", bookCode = UrlParameter.Optional, segmentCode = UrlParameter.Optional, sectionCode = UrlParameter.Optional, renderStrategy = UrlParameter.Optional }
);
This will also help with redirect in controllers and form urls created through MVC extensions.