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Asked: 2026-06-12T13:56:49+00:00

Possible Duplicate: EventHandler type with no event args I am creating event handlers and

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Possible Duplicate:
EventHandler type with no event args

I am creating event handlers and the corresponding event args (:EventArgs) thorough my project. But I am wondering if I need this EventArgs object. As I often have in this EventArgs on property, corresponding to this specific EventHandler.

Why should I need an EventArgs object where I could directly used the value?

I understand the value of using a specific object container like this sometimes. But most of the time I just need to pass one or two objects. Example: Why PropertyChangedEventHandler bothers itself using an EventArgs where a String would be enough? Does that not bring overhead?

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1 Answer

  1. Editorial Team

    I guess it’s a .NET convention to make event handlers uniform by accepting two parameters: the source of the event (sender) and the event args wrapped in a generic EventArgs object.

    Why PropertyChangedEventHandler bothers itself using an EventArgs
    where a String would be enough? Does that not bring overhead?

    No, because you pass a reference anyway, so no data actually gets moved around.

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