不要从 Xamarin Forms 中的 Graph AD 获取结果

Question

我正在尝试使用 xamarin 表单中的 Graph AD 获取用户电子邮件，所以在我使用 Azure b2c 登录并获取令牌后，我使用此 https://graph.windows.net/me?api-version=1.6 通过 get 方法发出了 http 请求，但我没有收到电子邮件我正在尝试获取，这是我的完整代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Identity.Client;
using Newtonsoft.Json.Linq;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace DesignKGVC
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class GetUsersPage : ContentPage
    {
        public GetUsersPage()
        {
            InitializeComponent();
        }
        protected override async void OnAppearing()
        {
            // let's see if we have a user in our belly already
            try
            {
                var result = await App.AuthenticationClient.AcquireTokenSilentAsync(Constants.Scopes);
                GetUsersInfo(result.Token);
                await DisplayAlert("OK", "OK", "OK");
            }
            catch
            {
                // doesn't matter, we go in interactive more

            }
        }

        private async void btnlogi(object sender, EventArgs e)
        {
            try
            {

                var result = await App.AuthenticationClient.AcquireTokenAsync(
                Constants.Scopes,
                string.Empty,
                UiOptions.SelectAccount,
                string.Empty,
                null,
                Constants.Authority,
                Constants.SignUpSignInPolicy);
                GetUsersInfo(result.Token);


                // await DisplayAlert("OK", "OK", "OK");

            }
            catch (Exception)
            {
                //
            }


        }

        public async void GetUsersInfo(string token)
        {
            var client = new HttpClient();
            var request = new HttpRequestMessage(HttpMethod.Get,
                "https://graph.windows.net/me?api-version=1.6");
            request.Headers.Authorization =
                 new AuthenticationHeaderValue("Bearer", token);
            //new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", result.Token);

            var response = await client.SendAsync(request);
            var content = await response.Content.ReadAsStringAsync();
            if (response.IsSuccessStatusCode)
            {
                JObject user = JObject.Parse(content);


                lbldisplayname.Text = user["displayName"].ToString();
                lblmail.Text = user["otherMails"].ToString();


                // just in case
                // btnSignInSignOut.Text = "Sign out";


            }
            else
            {
                lbldisplayname.Text = "Api Call Dont Work";
                //DisplayAlert("Something went wrong with the API call", responseString, "Dismiss");
            }
        }

    }
}

而不是获取显示名称和电子邮件，我得到的是我在 else 条件下编写的 "Api Call Dont Work"，因此我假设我的 Http 请求没有成功，那么是什么导致了这种情况？我很难，我没有错过任何东西，我已经得到了我作为参数发送的令牌，或者也许 b2c 不支持 Graph Api？编辑这是我在 Active Directory 中使用应用程序注册时得到的

Answer 1

请参阅本指南查询包含所有用户的 B2C 租户：Azure AD B2C: Use the Azure AD Graph API

Create App Registration and Key
使用密钥连接到 AD Graph Api

Azure AD Graph API 与 Microsoft Graph API

Answer 2

要获取登录用户的电子邮件地址，您可以select将其作为策略中的Application Claim：

通过jwt.ms

解码id token

不要从 Xamarin Forms 中的 Graph AD 获取结果

Dont get the result from Graph AD in Xamarin Forms

c#

graph

active-directory

xamarin.forms

azure-ad-b2c