private async Task <string> GetToken(string authority, string resource, string scope)
{
var clientAssertionCertPfx = CertificateHelper.FindCertificateByThumbprint(CertificateThumbprint);
ClientAssertionCertificate assertionCert = new ClientAssertionCertificate(AzureADClientId, clientAssertionCertPfx);
AuthenticationResult result = null;
AuthenticationContext context = new AuthenticationContext(authority, TokenCache.DefaultShared);
if (assertionCert != null)
{
result = await context.AcquireTokenAsync(resource, assertionCert);
}
if (result == null)
{
throw new InvalidOperationException("Failed to obtain the access token");
}
return(result.AccessToken);
}
