ASP.Net MVC Routing Issue - Question Mark appears on my links - asp.net-mvc

Question

I have a public website which accepts a pagename, this then defaults to a controller and action with the pagename as the unique identifier to render the correct view. eg. http://www.mydomain.com/homepage
I also have a admin area where all CRUD stuff takes place access via a prefix of admin. eg. http://www.mydomain.com/admin/controller/action
Everything has been fine until I changed something recently and now when I got to http://www.mydomain.com/homepage the links I have such as:
<ul id="menu">
<li><%= Html.ActionLink("Home", "Details", "WebPage", new { pageName = "homepage" }, null)%></li>
<li><%= Html.ActionLink("About", "Details", "WebPage", new { pageName = "homepage" }, null)%></li>
</ul>
no longer appear as http://www.mydomain.com/homepage but instead http://www.mydomain.com/Admin/WebPage/Details?pageName=homepage
Can someone help?
Here is my Global.asax:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute("AdminRoot",
"Admin",
new { controller = "Admin", action = "Index" }
);
routes.MapRoute(
"LogOn", // Route name
"LogOn", // URL with parameters
new { controller = "Account", action = "LogOn" },
new { action = "LogOn" }
);
routes.MapRoute("Account",
"Account/{action}",
new { controller = "Account", action = "" }
);
//routes.MapRoute(
// "Default", // Route name
// "{controller}/{action}/{id}", // URL with parameters
// new { controller = "Home", action = "Index", id = "" } // Parameter defaults
//);
routes.MapRoute(
"ErrorRoute", // Route name
"Error/Error404", // URL with parameters
new { controller = "Error", action = "Error404" }
);
routes.MapRoute("Admin",
"Admin/{controller}/{action}/{id}",
new { controller = "Admin", action = "Index", id = "" }
/*,new { action = "Create|Edit|Delete" }*/
);
routes.MapRoute("EventNewsData",
"Admin/{controller}/{action}/{year}/{month}",
new { controller = "Admin", action = "Index", year = 0, month = 0 }
/*,new { action = "Create|Edit|Delete" }*/
);
routes.MapRoute(
"Default", // Route name
"{pageName}/{moreInfoID}", // URL with parameters
new { controller = "WebPage", action = "Details", pageName = "homepage", moreInfoID = 0 },
new { action = "Details" }
);
routes.MapRoute("Error", "{*url}", new { controller = "Error", action = "Error404" });
}
UPDATE: This has fixed it but not really sure why
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute("AdminRoot",
"Admin",
new { controller = "Admin", action = "Index" },
new { action = "Index" }
);
routes.MapRoute(
"LogOn", // Route name
"LogOn", // URL with parameters
new { controller = "Account", action = "LogOn" },
new { action = "LogOn" }
);
routes.MapRoute("Account",
"Account/{action}",
new { controller = "Account", action = "" }
);
//routes.MapRoute(
// "Default", // Route name
// "{controller}/{action}/{id}", // URL with parameters
// new { controller = "Home", action = "Index", id = "" } // Parameter defaults
//);
routes.MapRoute("Admin",
"Admin/{controller}/{action}/{id}",
new { controller = "Admin", action = "Index", id = "" }
, new { action = "Create|Edit|Delete|Index|DeleteFromIndex" }
);
routes.MapRoute("EventNewsData",
"Admin/{controller}/{action}/{year}/{month}",
new { controller = "Admin", action = "Index", year = 0, month = 0 }
, new { action = "GetCalendarData" }
);
routes.MapRoute(
"Default", // Route name
"{pageName}/{moreInfoID}", // URL with parameters
new { controller = "WebPage", action = "Details", pageName = "homepage", moreInfoID = 0 },
new { action = "Details" }
);
routes.MapRoute(
"ErrorRoute", // Route name
"Error/Error404", // URL with parameters
new { controller = "Error", action = "Error404" }
);
routes.MapRoute("Error", "{*url}", new { controller = "Error", action = "Error404" });
}

Answer 1

Maybe the problem is in action = "Details" constraint (There is no "{action}" in "{pageName}/{moreInfoID}"):
routes.MapRoute(
"Default", // Route name
"{pageName}/{moreInfoID}", // URL with parameters
new { controller = "WebPage", action = "Details", pageName = "homepage", moreInfoID = 0 },
new { action = "Details" }
);
UPDATED:
Now your code is using this route:
routes.MapRoute("Admin",
"Admin/{controller}/{action}/{id}",
new { controller = "Admin", action = "Index", id = "" }
/*,new { action = "Create|Edit|Delete" }*/
);
But you can use Html.RouteLink instead:
<ul id="menu">
<li><%= Html.RouteLink("Home", "Default", new { pageName = "homepage" })%> </li>
<li><%= Html.RouteLink("About", "Default", new { pageName = "homepage" })%> </li>
</ul>
UPDATED:
ASP.NET Routing looks for route with "Details" action and "WebPage" controller ("pageName" is optional) and match "Admin" route.
UPDATED:
Or add this route before "Admin" route:
routes.MapRoute("TheRoute",
"{pageName}/{moreInfoID}",
new { controller = "WebPage", action = "Details", moreInfoID = 0 },
new { pageName = "homepage" }
);