c# - BackgroundWorker RunWorkerCompletedEventArgs.Cancelled 始终为 false

Question

我通过调用 BackgroundWorker 上的 CancelAsync() 方法取消我的操作，当执行落入事件 RunWorkerCompleted 时，属性 Cancelled RunWorkerCompletedEventArgs 为假。

不过，我不太清楚应该在何时何地将其设置为 true，如 EventArgs 属性中所示。那么，如何呢？

Answer 1

来自 MSDN :

The Cancelled property ofRunWorkerCompletedEventArgsindicates whether a cancellationrequest was processed by thebackground operation.

If your code inthe DoWork event handler detects acancellation request by checking theCancellationPending flag and settingthe Cancel flag ofDoWorkEventArgsto true, the Cancelled flag ofRunWorkerCompletedEventArgsalso will be set to true.