Microsoft Graph API 无法发送电子邮件 C# 控制台

Question

我创建了一个小型 Console App 以使用 Microsoft Graph API 发送电子邮件。

教程使用

https://docs.microsoft.com/en-us/graph/api/user-sendmail?view=graph-rest-1.0&tabs=csharp

错误

ServiceException：代码：NoPermissionsInAccessToken 消息：令牌 不包含权限，或者权限无法理解。

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using Microsoft.Graph;
using Microsoft.Graph.Auth;
using Microsoft.Graph.Extensions;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Identity.Client;

namespace GraphAPI
 {
    class Program
    {

    static void Main(string[] args)
    {
        // Azure AD APP
        string clientId = "<client Key Here>";
        string tenantID = "<tenant key here>";
        string clientSecret = "<client secret here>";

        Task<GraphServiceClient> callTask = Task.Run(() => SendEmail(clientId, tenantID, clientSecret));
        // Wait for it to finish
        callTask.Wait();
        // Get the result
        var astr = callTask;
    }

    public static async Task<GraphServiceClient> SendEmail(string clientId, string tenantID, string clientSecret)
    {

        IConfidentialClientApplication confidentialClientApplication = ConfidentialClientApplicationBuilder
            .Create(clientId)
            .WithTenantId(tenantID)
            .WithClientSecret(clientSecret)
            .Build();

        ClientCredentialProvider authProvider = new ClientCredentialProvider(confidentialClientApplication);       

        GraphServiceClient graphClient = new GraphServiceClient(authProvider);

        var message = new Message
        {
            Subject = "Meet for lunch?",
            Body = new ItemBody
            {
                ContentType = BodyType.Text,
                Content = "The new cafeteria is open."
            },
            ToRecipients = new List<Recipient>()
            {
                new Recipient
                {
                    EmailAddress = new EmailAddress
                    {
                        Address = "myToEmail@gmail.com"
                    }
                }
            },
            CcRecipients = new List<Recipient>()
            {
                new Recipient
                {
                    EmailAddress = new EmailAddress
                    {
                        Address = "myCCEmail@gmail.com"
                    }
                }
            }
        };

        var saveToSentItems = true;

          await graphClient.Me
            .SendMail(message, saveToSentItems)
            .Request()
            .PostAsync();

        return graphClient;

    }

}

}

这是我授予 AD APP 的权限截图

那么，谁能指导我哪里出错了

Answer 1

根据您的屏幕截图，您尚未授予管理员对Mail.Send 应用程序权限的同意。

点击api权限下的授予管理员同意按钮。

更新：

交互式提供者：

            string[] scopes = { "Mail.Send" };
            string clientId = "";
            IPublicClientApplication publicClientApplication = PublicClientApplicationBuilder
            .Create(clientId)
            .WithRedirectUri("https://localhost")
            .Build();

            InteractiveAuthenticationProvider authProvider = new InteractiveAuthenticationProvider(publicClientApplication, scopes);

            GraphServiceClient graphClient = new GraphServiceClient(authProvider);