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What do you mean by event in dotnet?

Updated: 8/17/2019
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14y ago

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An "event" in .Net is an implementation of the Observer design pattern. When you declare that one of your classes has an event, you declare the name of the event, and the arguments that the event will pass. Then, your other classes can "Observe" when this event happens, and handle the event when it is "Fired".

For example, the Button windows control has a "Click" event. You can then write code that watches for those clicks, and runs when it happens.

An event in C# is a way for a class to provide notifications to clients of that class when some interesting thing happens to an object. The most familiar use for events is in graphical user interfaces; typically, the classes that represent controls in the interface have events that are notified when the user does something to the control (for example, click a button).

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