Razor Pages override route getting RoutePatternException despite seemingly correct-CodePudding

I am using Razor Pages, and everything has been going smoothly so far.

Now I wish to create a page with an override route. Like the override routes that are shown possible here.

I am, however encountering the following exception, despite I don't seem to have the issue in my code that it describes:

RoutePatternException: There is an incomplete parameter in the route template. Check that each '{' character has a matching '}' character.

I must be somehow misunderstanding how this routing works, but I haven't been able to find someone encountering the same issue in my preliminary searches.

This is my entire code on this page so far:

@page "/layouts/{layoutId:int}/save/{revisionId:int}"
@model Project.Web.Pages.TenantBased.Layouts.SavePageModel
@{
    Layout = "_TenantLayout";
    ViewData["Title"] = "Title";
}

And this is the code-behind:

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace Legalit.Web.Pages.TenantBased.Layouts
{
    public class SavePageModel : PageModel
    {
        public void OnGet(int layoutId, int revisionId)
        {
        }
    }
}

This gives the following exception when running the project:

RoutePatternException: There is an incomplete parameter in the route template. Check that each '{' character has a matching '}' character.

If I remove the first / from the route as so:

@page "layouts/{layoutId:int}/save/{revisionId:int}"

Then it stops generating the exception, but I of course get the wrong routing from it. Now my page is reachable by the directory path with this route added to the end of it.

I am using .NET 6.0. The project type is Microsoft.NET.Sdk.Web

CodePudding user response：

The project had a custom Convention in the Program.cs that was specified under the AddRazorPagesOptions configuration method.

After removing this, it worked fine.