c# - 对 ApplicationTokenProvider.LoginSilentAsync 的调用永远不会返回

Question

我正在尝试使用以下代码从我的本地 PC 连接到 AzureBillingAPI:

var serviceCreds = await ApplicationTokenProvider.LoginSilentAsync(tenantDomain, clientId, secret);

此方法永远不会返回。调试输出显示以下内容:

---

Microsoft.IdentityModel.Clients.ActiveDirectory Verbose: 1 : 07/03/2017 14:02:07: e608ec23-675f-4828-aa65-72479409ec63 - TokenCache: Looking up cache for a token...

iisexpress.exe Information: 0 : 07/03/2017 14:02:07: e608ec23-675f-4828-aa65-72479409ec63 - TokenCache: Looking up cache for a token...

Microsoft.IdentityModel.Clients.ActiveDirectory Information: 2 : 07/03/2017 14:02:07: e608ec23-675f-4828-aa65-72479409ec63 - TokenCache: No matching token was found in the cache

iisexpress.exe Information: 0 : 07/03/2017 14:02:07: e608ec23-675f-4828-aa65-72479409ec63 - TokenCache: No matching token was found in the cache

---

问题:如何连接？ 谢谢。

Answer 1

根据你的描述，我猜这个方法不返回的原因是你在sync Controller方法中用wait关键字调用了async方法。

如果您如下调用 getResultAsync，它永远不会返回结果:

    public ActionResult Index()
    {
       getResultAsync().Wait();
        return View();
    }

    public static async Task getResultAsync()
    {
        string subscription = "subid";

        string tenantid = "tenantid ";
        string clientId = "clientId ";
        string key = "key";

        var serviceCreds = await ApplicationTokenProvider.LoginSilentAsync(tenantDomain, clientId, key);

        BillingManagementClient b1 = new BillingManagementClient(serviceCreds) { SubscriptionId = subscription };


        var result = b1.Operations.List();

    }

我建议你可以改变索引方法如下，它会工作得很好:

   public async Task<ActionResult> Index()
        {
            await getResultAsync();
            return View();
        }

结果: