C 语言中的 MS Teams 会议集成#

问：

我正在尝试在 C# 中创建一个能够与 Microsoft 团队集成的应用程序，我可以在其中安排团队会议、获取会议列表和更新，但在创建 MS Teams 会议时，我收到以下错误。

'代码：BadRequest

消息：/me 请求仅对委托的身份验证流有效。

使用以下代码创建 MS Teams 会议

string clientId = "";
string clientSecret = "";
string tenantId = "";
string redirectUri = ""; 

string authority = $"https://login.microsoftonline.com/{tenantId}";

////string authority = $"https://login.microsoftonline.com/{tenantId}";

// Create a confidential client application
var confidentialClientApp = ConfidentialClientApplicationBuilder
    .Create(clientId)
    .WithClientSecret(clientSecret)
    .WithAuthority(new Uri(authority))
    .Build();

// Define the scopes required for Microsoft Graph API
////string[] scopes = { "User.Read", "OnlineMeetings.ReadWrite" }; // Add any additional scopes needed
var scopes = new string[] { "https://graph.microsoft.com/.default" };

try
{
    // Acquire an access token
    var result = await confidentialClientApp
        .AcquireTokenForClient(scopes)
        .ExecuteAsync();

    // Use the access token in your Graph API requests
    string accessToken = result.AccessToken;

    // Create a GraphServiceClient
    var graphServiceClient = new GraphServiceClient(new DelegateAuthenticationProvider(async (requestMessage) =>
    {
        requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
    }));

    // Create an online meeting
    var onlineMeeting = new OnlineMeeting
    {
        StartDateTime = DateTimeOffset.UtcNow.AddMinutes(5), // Schedule the meeting 5 minutes from now
        EndDateTime = DateTimeOffset.UtcNow.AddHours(1), // Set the duration of the meeting (1 hour in this example)
        Subject = "Teams Meeting created via Graph API",
    };

    var createdMeeting = await graphServiceClient.Me.OnlineMeetings
        .Request()
        .AddAsync(onlineMeeting);

    Console.WriteLine($"Meeting created with ID: {createdMeeting.Id}");
    Console.WriteLine($"Join URL: {createdMeeting.JoinWebUrl}");
}
catch (Exception ex)
{
    Console.WriteLine($"Error acquiring token or making Graph API request: {ex.Message}");
}