How to get a list of all routes in ASP.NET Core?

If you’re on ASP.NET Core 3.0+, that means you’re using endpoint routing, then you can list all routes with EndpointDataSources.

Inject IEnumerable<EndpointDataSource> to your controller/endpoint then extract anything you need. It works with both controller actions, endpoints, and partially with razor pages (razor pages don’t seem to expose available HTTP methods).

[Route("/-/{controller}")]
public class InfoController : Controller
{
    private readonly IEnumerable<EndpointDataSource> _endpointSources;

    public InfoController(
        IEnumerable<EndpointDataSource> endpointSources
    )
    {
        _endpointSources = endpointSources;
    }

    [HttpGet("endpoints")]
    public async Task<ActionResult> ListAllEndpoints()
    {
        var endpoints = _endpointSources
            .SelectMany(es => es.Endpoints)
            .OfType<RouteEndpoint>();
        var output = endpoints.Select(
            e =>
            {
                var controller = e.Metadata
                    .OfType<ControllerActionDescriptor>()
                    .FirstOrDefault();
                var action = controller != null
                    ? $"{controller.ControllerName}.{controller.ActionName}"
                    : null;
                var controllerMethod = controller != null
                    ? $"{controller.ControllerTypeInfo.FullName}:{controller.MethodInfo.Name}"
                    : null;
                return new
                {
                    Method = e.Metadata.OfType<HttpMethodMetadata>().FirstOrDefault()?.HttpMethods?[0],
                    Route = $"/{e.RoutePattern.RawText.TrimStart("https://stackoverflow.com/")}",
                    Action = action,
                    ControllerMethod = controllerMethod
                };
            }
        );
        
        return Json(output);
    }
}

when you visit /-/info/endpoints, you’ll get a list of routes as JSON:

[
  {
    "method": "GET",
    "route": "/-/info/endpoints", // <-- controller action
    "action": "Info.ListAllEndpoints",
    "controllerMethod": "Playground.Controllers.InfoController:ListAllEndpoints"
  },
  {
    "method": "GET",
    "route": "/WeatherForecast", // <-- controller action
    "action": "WeatherForecast.Get",
    "controllerMethod": "Playground.Controllers.WeatherForecastController:Get"
  },
  {
    "method": "GET",
    "route": "/hello", // <-- endpoint route
    "action": null,
    "controllerMethod": null
  },
  {
    "method": null,
    "route": "/about", // <-- razor page
    "action": null,
    "controllerMethod": null
  },
]