c# - 在枚举期间添加和删除 ConcurrentBag 的元素

Question

当线程添加或删除 ConcurrentBag<T> 的元素时会发生什么而另一个线程正在枚举这个包？新元素是否也会出现在枚举中，删除的元素是否不会出现？

Answer 1

一 jar read the fine manual发现:

ConcurrentBag<T>.GetEnumerator Method

The enumeration represents a moment-in-time snapshot of the contents of the bag. It does not reflect any updates to the collection after GetEnumerator was called. The enumerator is safe to use concurrently with reads from and writes to the bag.

强调我的。