using Microsoft.Graph; using System; using System.Collections.Generic; using System.Linq; using System.Net.Http.Headers; using System.Text; using System.Threading.Tasks; namespace DWSIM.Simulate365 { public class GraphClientFactory { public static GraphServiceClient CreateClient(string accessToken) { return new GraphServiceClient(new DelegateAuthenticationProvider((requestMessage) => { requestMessage .Headers .Authorization = new AuthenticationHeaderValue("Bearer", accessToken); return Task.FromResult(0); })); } } }