# Event

A member that lets an object notify subscribed code that something happened.

## What is **Event** in C#?

**Event** — A member that lets an object notify subscribed code that something happened.

```csharp
class Door
{
    public event EventHandler? Opened;
}
```

Level: Freelancer · [More C# terms at this level](https://www.ask-codey.com/glossary/subjects/c-sharp/freelancer)

Updated: September 27, 2026

## In other subjects

- [Event in JavaScript](https://www.ask-codey.com/glossary/event-javascript-2)

Source: https://www.ask-codey.com/glossary/event