---
created: 2024-09-09T09:33
updated: 2025-07-20T17:22
---

email  koopernikus@web.de

telefonnummer 01607851441

URL
https://claude.ai

Was war das nochmal ?


using Microsoft.Graph;
using Microsoft.Identity.Client;

// ... (in Ihrer Funktionsmethode)

var clientId = Environment.GetEnvironmentVariable("CLIENT_ID");
var clientSecret = Environment.GetEnvironmentVariable("CLIENT_SECRET");
var tenantId = Environment.GetEnvironmentVariable("TENANT_ID");

var confidentialClientApplication = ConfidentialClientApplicationBuilder
    .Create(clientId)
    .WithClientSecret(clientSecret)
    .WithAuthority(new Uri($"https://login.microsoftonline.com/{tenantId}/v2.0"))
    .Build();

var scopes = new[] { "https://graph.microsoft.com/.default" };

var authResult = await confidentialClientApplication.AcquireTokenForClient(scopes).ExecuteAsync();

var graphClient = new GraphServiceClient(new DelegateAuthenticationProvider(async (request) =>
{
    request.Headers.Authorization = new HeaderStringValues($"Bearer {authResult.AccessToken}");
}));

// Beispiel für einen Graph-API-Aufruf
var user = await graphClient.Users["user@example.com"].Request().GetAsync();



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