Can't map route to action mvc3 - asp.net-mvc-3

Question

I'm trying to create a new Route in MVC3 to achieve the link http://localhost/Product/1/abcxyz:
routes.MapRoute(
"ProductIndex", // Route name
"{controller}/{id}/{name}", // URL with parameters
new { controller = "Product", action = "Index", id = UrlParameter.Optional, name = UrlParameter.Optional } // Parameter defaults
);
And I used Route Link like this:
<li>#Html.RouteLink("My Link", "ProductIndex", new { controller = "Product", id = 10, name = "abcxyz" })</li>
Product Index action:
public ViewResult Index(int id, string name)
{
var product = db.Product.Include(t => t.SubCategory).Where(s => s.SubID == id);
return View(product.ToList());
}
The url render as I expected. But when I click on it, I got a 404 error with message
HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly
UPDATE
I place that Route above Default Route and the URL work fine. But there's a problem occure. My index page http://locahost point directly to Index action of Product controller, but I want it points to Index action of Home controller instead

Answer 1

It's because you have 2 optional parameters in your route and the engine can't work out which one to set the value to. See my answer to a similar issue here
You can create a specific route for your products controller first (with mandatory id) and then have the generic fallback route afterwards.
routes.MapRoute(
"ProductIndex", // Route name
"products/{id}/{name}", // URL with parameters
new { controller = "Product", action = "Index", name = UrlParameter.Optional } // Parameter defaults
);

Answer 2

Try it
routes.MapRoute(
"Default", // Route name
"{controller}/{id}/{name}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional, name = UrlParameter.Optional } // Parameter defaults
);
for routing details see this link. In this link every type of routing is discussed.
http://www.codeproject.com/Articles/408227/Routing-in-MVC3