## AsyncCompletedEventArgs::get_UserState method


获取异步任务的唯一标识符。一个对象引用，唯一标识该异步任务；如果未设置值，则为 null。

```cpp
System::SharedPtr<Object> System::ComponentModel::AsyncCompletedEventArgs::get_UserState() const
```

## 另见

* Typedef [SharedPtr](../../../system/sharedptr/)
* Class [Object](../../../system/object/)
* Class [AsyncCompletedEventArgs](../)
* Namespace [System::ComponentModel](../../)
* Library [Aspose.Page for C++](../../../)