17.7.3 Static and instance events

最新推荐文章于 2020-04-09 11:41:34 发布

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本文探讨了静态事件与实例事件之间的区别。静态事件不与特定实例相关联，并且在访问器中不能引用 this。而实例事件则与类的特定实例相关联，在其访问器中可以使用 this 访问该实例。

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When an event declaration includes a static modifier, the event is said to
be a static event. When no static
modifier is present, the event is said to be an instance event.
A static event is not associated with a specific instance, and it is a
compile-time error to refer to this in the
accessors of a static event.
An instance event is associated with a given instance of a class, and this
instance can be accessed as this
(§14.5.7) in the accessors of that event.
When an event is referenced in a member-access (§14.5.4) of the form E.M,
if M is a static event, E must denote a
type, and if M is an instance event, E must denote an instance.
The differences between static and instance members are discussed further
in §17.2.5.