C# Azure面向公众的负载平衡器

我想列出Azure中所有具有公共IP地址的负载平衡器，但我只得到一个子集，而不是整个结果

 var credentials = SdkContext.AzureCredentialsFactory
                                          .FromServicePrincipal(clientId, secret,
                                           tenantId, AzureEnvironment.AzureGlobalCloud);

var azure = Microsoft.Azure.Management.Fluent.Azure
                                .Configure()
                               .Authenticate(credentials).WithDefaultSubscription();

foreach (var subscription in azure.Subscriptions.List())
{
      var loadbalancers = azure.LoadBalancers;

      foreach (var loadbalancer in loadbalancers.List())
      {
        if (loadbalancer.PublicFrontends.Count >= 1)
        {
          writelog("load balancer:" + loadbalancer.Name);
        }
      }
}

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您需要对每个订阅进行身份验证，然后获取负载平衡器列表