如何使用'token'response_type获取facebook用户的访问令牌/身份验证令牌？

Question

在我的c＃应用程序中，我正在尝试使用facebook c＃sdk获取用户的accessstoken /身份验证令牌。 如果我使用response_type ='code'，那么我在回调函数中获取数据，但是当我使用response_type ='token'时，数据将变为null。 当我使用response_type ='code'

时，贝娄是我的代码

  private Uri RedirectUri
    {
        get
        {
            var uriBuilder = new UriBuilder(Request.Url);
            uriBuilder.Query = null;
            uriBuilder.Fragment = null;
            uriBuilder.Path = Url.Action("FacebookCallback");
            return uriBuilder.Uri;
        }
    }
  public ActionResult FacebookLogin()
    {
        var fb = new FacebookClient();
        var loginUrl = fb.GetLoginUrl(new
        {
            client_id = "146137372750966",
            client_secret = "",
            redirect_uri = RedirectUri.AbsoluteUri,
            response_type = "code",
            scope = "public_profile,email",
            state = "gsdfgjpfosd34956834"
        });

        return Redirect(loginUrl.AbsoluteUri);

    }

    public ActionResult FacebookCallback(string code)
    {
    }

当我使用response_type ='token'

时，Bellow是代码

private Uri RedirectUri
    {
        get
        {
            var uriBuilder = new UriBuilder(Request.Url);
            uriBuilder.Query = null;
            uriBuilder.Fragment = null;
            uriBuilder.Path = Url.Action("FacebookCallback");
            return uriBuilder.Uri;
        }
    }

 public ActionResult FacebookLogin()
    {
        var fb = new FacebookClient();
        var loginUrl = fb.GetLoginUrl(new
        {
            client_id = "146137372750966",
            client_secret = "",
            redirect_uri = RedirectUri.AbsoluteUri,
            response_type = "token",
            scope = "public_profile,email",
            state = "gsdfgjpfosd34956834"
        });

        return Redirect(loginUrl.AbsoluteUri);

    }

    public ActionResult FacebookCallback(string code)
    {
    }

传递response_type =“token”，

时，我无法识别我正在做的错误

返回的网址是这样的。

http://localhost:32432/FacebookCallback?#state=gsdfgjpfosd34956834&access_token=lfahfegldskgjsdgdslkkghlsgfsgmndf;lhjd&expires_in=3927

如何在回调函数中阅读此内容？