谁处理了我的活动 [英] Who handled my event

问题描述

我已经在TextBox上注册了一个LostFocus事件但事件并没有被捕获 - 我的猜测是其他人处理了它。

我尝试过使用snoop但它只显示了我MouseDown和MouseUp事件（我需要LostFocus）。

关于如何找到的任何想法？



谢谢



更新：

用于注册活动的代码示例



eventInfo.AddEventHandler（cloningObject ，eventDelegate）;

I have registered to a LostFocus event on a TextBox and yet the event is not catch - my guess is that someone else handled it.
I've tried using snoop but it only shows me the MouseDown and MouseUp events (and I need the LostFocus).
Any ideas on how can I find out?

Thanks

Update:
code sample for registering to the event

eventInfo.AddEventHandler(cloningObject, eventDelegate);

推荐答案

你不应该使用LostFocus，你应该使用Enter和Leave事件。



见这里：



MSDN LostFocus事件 [ ^ ]



LostFocus事件可能不会触发，具体取决于t他处理了UICues。无论哪种方式，都无法取消LostFocus事件，因此即使其他人确实附加了它，它也不会取消附加事件处理程序或阻止它被调用。

You shouldn't be using LostFocus, you should use the Enter and Leave events.

See here:

MSDN LostFocus Event[^]

The LostFocus event may not fire depending on how the UICues are handled. Either way, there is no way to cancel a LostFocus event, so even if somebody else did attach to it, it wouldn't unattach your event handler or stop it from being called.

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