How to access domain users' calendar using service account in .net?

Question

I am using service account with key.p12 cert to access google calendar API. However, it cannot access any user\'s calendar in the domain. I did follow the steps to Delegatin

Answer 1

Actually, the code should use service account to "impersonate" the domain users one by one, rather than trying to share calendars with service account.

    ServiceAccountCredential.Initializer(serviceAccountEmail)
    {
        Scopes = new[] { CalendarService.Scope.Calendar },
        User = "myaccount@mydomain.com" // impersonate domain user
    }.FromCertificate(certificate));

Also need follow the steps for Delegating domain-wide authority to the service account in google domain admin console, and add the right scope( for calendar, it is https://www.googleapis.com/auth/calendar )