如何让 routelink 返回正确的 URL？

Question

here is the procedure to duplicate the issue.

1. start new mvc 4 project.

2. add the following lines to the RegisterRoutes() method just before the "Default" route

   routes.MapRoute( name: "Test", url: "Test/{action}", defaults: new { controller = "Test", action = "Index" } );

3. add the following to Index.cshtml and About.cshtml

    @Html.RouteLink("link to TestController", "Test")

As you can see that the generated html code is different for the 2 pages. I would expect the URL is "/Test" which is rendered correctly for Index.cshtml, but it become "/Test/About" for About.cshtml.

My question is if there is any documented way to generate the same correct URL. The above example is created just for demonstration purpose. I would like to use the routing table information to generate menu.

Answer 1

It seems the engine is setting the action route value from the current page ("Index", "About"). So one way to fix this is to "unset" that route value:

@Html.RouteLink("link to Test Controller", "Test", new { action = String.Empty })

Answer 2

Register your route

 routes.MapRoute(
                name: "TestUrl",
                url: "Test",
                defaults: new { controller = "TestController", action = "TestAction" }
            );

add the following to TestAction.cshtml

 @Html.RouteLink("Test", "TestUrl")

Now your URL is /Test, hoping this will help you.

Answer 3

Quickest way would be to just specify a blank action.

@Html.RouteLink("link to TestController", "", "Test")

This will produce /Test

Answer 4

For those who arrive here looking for .netcore razor page RouteLink syntax, don't use RouteLink's " page " reserved member. It will not work for the routeValues object as some have suggested. Instead, use the following format:

<a asp-page="RazorPage">RazorPage</a>

This handles trailing and the absence of trailing forward slashes. The RazorPage is the name of the page without any characters after the first ".".