如何获取 asp.net 内核中任何 url 的路由值？

Question

I need to get the route values for an arbitrary URL in ASP.NET MVC Core.

It could be something like this SO question: How to determine if an arbitrary URL matches a defined route , because I haven't found any direct way to do it.

And I haven't been able to do it with that approach either.

It looks like once I have an HttpContext with a Request for the url, it's easy to get the route values, and looking at the source code for aspnet/Hosting in GitHub I got to the point where HttpContextFactory gets created, but that was it, just couldn't go any further!

Does someone know how to do this?

Thanks in advance!

Answer 1

I know this an older post, but this is what I did in order to get RouteData from a RouteCollection running in an ASP.NET MVC Core app based on a URL.

public async Task<ActionResult> GetRouteDataForUrl([FromQuery(Name = "url")] string url)
{
  var uri = new Uri(url);

  var httpContext = new DefaultHttpContext();
  httpContext.Request.Path = uri.PathAndQuery;

  var routeContext = new RouteContext(httpContext);
  var router = RouteData.Routers.First(); //get the top level router

  await router.RouteAsync(routeContext); //router updates routeContext

  return new JsonResult(routeContext.RouteData.Values);
}

The routeContext.RouteData is populated by the root level router.

Answer 2

Ref: Net6 You can install the package and use the namespace using Microsoft.AspNetCore.Routing;

then you can get route values like this

var routeData = _httpContextAccessor.HttpContext.GetRouteData(); ;
var namedRouteValue = _httpContextAccessor.HttpContext.GetRouteValue("route-key"); 

Answer 3

请尝试；

var t =  ViewContext.RouteData.Values["id"];