asp.net-mvc Routing Custom Routing
Example
Custom routing provides specialized need of routing to handle specific incoming requests.
In order to defining custom routes, keep in mind that the order of routes that you add to the route table is important.
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
// this is an advanced custom route
// you can define custom URL with custom parameter(s) point to certain action method
routes.MapRoute(
"CustomEntry", // Route name
"Custom/{entryId}", // Route pattern
new { controller = "Custom", action = "Entry" } // Default values for defined parameters above
);
// this is a basic custom route
// any custom routes take place on top before default route
routes.MapRoute(
"CustomRoute", // Route name
"Custom/{controller}/{action}/{id}", // Route pattern
new { controller = "Custom", action = "Index", id = UrlParameter.Optional } // Default values for defined parameters above
);
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // Route pattern
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Default values for defined parameters above
);
}
controller and action names are reserved. By default MVC maps {controller} part of the URL to the class <controller>Controller, and then looks for a method with the name <action> without adding any suffixes.
Though it may be tempting to create a family of routes using {controller}/{action}/{parameter} template consider that by doing this you disclose the structure of your application and make URLs somewhat brittle because changing the name of the controller changes the route and breaks the links saved by the user.
Prefer explicit route setting:
routes.MapRoute(
"CustomRoute", // Route name
"Custom/Index/{id}", // Route pattern
new { controller = "Custom", action = nameof(CustomController.Index), id = UrlParameter.Optional }
);
(you cannot use nameof operator for controller name as it will have additional suffix Controller) which must be omitted when setting controller name in the route.
