Events in Dotnet Framework

What are Events in .NET Framework?

In the .NET Framework, an Event is a way for one object (publisher) to notify other objects (subscribers) that something has happened.

It’s built on delegates, which define the method signature for event handlers.

In simple terms:An event is a notification triggered by an action (like a button click), and handled by methods (event handlers) that respond to it.

Example:

public event EventHandler MyEvent;

void RaiseEvent()
{
    MyEvent?.Invoke(this, EventArgs.Empty);
}

Key Points:

Events use delegates internally.
Publisher raises the event, subscribers handle it.
You can attach (+=) or detach (-=) event handlers.
Used widely in UI apps, services, and real-time notifications.

In short:
Events = Communication mechanism between objects ? when something happens, others get notified automatically.

2 Replies

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Sandhiya Priya10mo ago
What are Events in .NET Framework?
In the .NET Framework, an Event is a way for one object (publisher) to notify other objects (subscribers) that something has happened.
It’s built on delegates, which define the method signature for event handlers.
In simple terms:An event is a notification triggered by an action (like a button click), and handled by methods (event handlers) that respond to it.
Example:
```
public event EventHandler MyEvent;

void RaiseEvent()
{
    MyEvent?.Invoke(this, EventArgs.Empty);
}
```
Key Points:
- Events use delegates internally.
- Publisher raises the event, subscribers handle it.
- You can attach (+=) or detach (-=) event handlers.
- Used widely in UI apps, services, and real-time notifications.
In short:
Events = Communication mechanism between objects ? when something happens, others get notified automatically.
0
Rinki1y ago
In the .NET Framework, events are a key part of the language's support for the observer design pattern, which allows objects to communicate in a publisher-subscriber model.

You can read more here - https://www.c-sharpcorner.com/UploadFile/vemuhemanth/events-in-net/
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