get url after oauth2 redirect

        public async Task<Oauth> GetOauthToken(string ClientId, string Scope, string State, string RedirectUri, string ResponseType)
        {
            var request = new RestRequest("/authorize", Method.Get);
            request.AddParameter("client_id",ClientId);
            request.AddParameter("scope",Scope);
            request.AddParameter("state",State);
            request.AddParameter("redirect_uri",RedirectUri);
            request.AddParameter("response_type",ResponseType);

            using (var client = new RestClient("https://oauth.battle.net"))
            {
                var url = client.BuildUri(request).ToString();
                await client.ExecuteAsync(request);
                return new Oauth
                {
                    AuthorizationCode = url
                };
                
            }
        }

    private async Task MakeRequest3()
    {
        try
        {
            var url = await api.GetOauthToken("clientid", "wow.profile", "/", "https://localhost:7280/", "code");
            nav.NavigateTo(url.AuthorizationCode);
        }
        catch (UnSuccesfullReponseException e)
        {
            Console.WriteLine(e.Message);
            apiOutput = e.Message;
        }  
    }