ModernAuth with MSAL Device Authentication Flow

ModernAuth-with-MSAL-Device-Authentication-Flow

using Microsoft.Identity.Client;
using System;
using System.Net.Http;
using System.Threading.Tasks;

public static async Task<string> GetAccessTokenAsync(string clientId, string tenantId)
{
    var app = PublicClientApplicationBuilder.Create(clientId)
        .WithAuthority($"https://login.microsoftonline.com/{tenantId}")
        .Build();
    var result = await app.AcquireTokenWithDeviceCode(new[] { "https://graph.microsoft.com/.default" },
        callback => {
            Console.WriteLine(callback.Message);
            return Task.FromResult(0);
        }).ExecuteAsync();
    return result.AccessToken;
}

public static async Task<HttpResponseMessage> CallGraphApiAsync(string accessToken)
{
    var httpClient = new HttpClient();
    httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);
    var response = await httpClient.GetAsync("https://graph.microsoft.com/v1.0/me");
    return response;
}