c# - 是否有必要取消订阅事件？

Question

不取消订阅 C# 中的事件可能有多严重？这是强制性的还是可取的行动？

Answer 1

这是 MSDN documentation 中的重要部分你应该考虑到的

To prevent your event handler from being invoked when the event is raised, simply unsubscribe from the event. In order to prevent resource leaks, it is important to unsubscribe from events before you dispose of a subscriber object. Until you unsubscribe from an event, the multicast delegate that underlies the event in the publishing object has a reference to the delegate that encapsulates the subscriber's event handler. As long as the publishing object holds that reference, your subscriber object will not be garbage collected.