First of all let me explain my environment, which is I have

• Visual Studio 2022
• Microsoft.Graph version 5.56.0.0
• Microsoft.Identity.Client version 4.63.0.0

I am using this code where after line

var mailFolderCollectionPage = await  graphClient.Me.MailFolders.GetAsync();

Visual Studio debugger is completely skipping the exiting application.

Here is my C# code – is there anything wrong with this code?

I have got these permissions in Azure

Code:

private static async System.Threading.Tasks.Task ReadMailsFromExchangeServerByusingmsGraph()
{
    var graphClient = GetAuthenticatedGraphClient();

    // Fetch mail folders asynchronously
    var mailFolderCollectionPage = await  graphClient.Me.MailFolders.GetAsync();

    // Now you can iterate over the MailFolders
    foreach (var mailFolder in mailFolderCollectionPage.Value)
    {
        Console.WriteLine(mailFolder.DisplayName);
    }
}

private static GraphServiceClient GetAuthenticatedGraphClient()
{
    var tenantId = ConfigurationManager.AppSettings["tenantId"];

    // Value from app registration
    var clientId = ConfigurationManager.AppSettings["appId"];
    var clientSecret = ConfigurationManager.AppSettings["clientSecret"];

    // The client credentials flow requires that you request the
    // /.default scope, and pre-configure your permissions on the
    // app registration in Azure. An administrator must grant consent
    // to those permissions beforehand.

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

    // using Azure.Identity;
    var options = new ClientSecretCredentialOptions
       {
           AuthorityHost = AzureAuthorityHosts.AzurePublicCloud,
       };

    // https://learn.microsoft.com/dotnet/api/azure.identity.clientsecretcredential
    var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);

    var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

    return graphClient;
}