启用与使用者介面互动的背景工作，透过使用者介面执行绪上引发的事件来沟通。

Enables background tasks that interact with the user interface, communicating via events raised on the user-interface thread.

youdao

启用与使用者介面互动的背景工作，透过使用者介面执行绪上引发的事件来沟通。

Enables background tasks that interact with the user interface, communicating via events raised on the user-interface thread.

youdao