c# - PubNub 访问导致异步方法

Question

我正在编写一个 API，它将授予对 pubnub channel 的访问权限，但需要等待授予访问权限并返回结果。有人可以告诉我如何等待回复吗？

The return type of .Async is void

我调用的授予访问权限的方法如下；

pubnub.Grant()
            .Channels(new string[] {
            "channel"
            })
            .Read(true)
            .Write(true)
            .AuthKeys(new List<string>() { "xyz" }.ToArray())
            .TTL(0)
            .Async(new PNAccessManagerGrantResultExt((result, status) =>
            {
               //I need to await this and return the result in my method
            }));

Since it does not return a task I cannot await it and my return statement would execute before this even completes.

如有任何建议，我们将不胜感激。

Answer 1

我已经从 PubNub 支持部门收到了解决这个问题的以下解决方案，见下文

var resultTask = new TaskCompletionSource<PNAccessManagerGrantResult>();

pubnub.Grant()
            .Channels(new string[] {
            "channel"
            })
            .Read(true)
            .Write(true)
            .AuthKeys(new List<string>() { "xyz" }.ToArray())
            .TTL(0)
            .Async(new PNAccessManagerGrantResultExt((result, status) =>
            {
               resultTask.TrySetResult(result);
            }));

var syncResult = resultTask.Task.Result;