# Changed Event

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

This event fires when a modification has occurred to the Qlik Sense entity's selection state, data or properties.

## Syntax

```
public event EventHandler Changed
```

## Returns

| Type | Description |
| --- | --- |
| System.EventHandler |  |

## Remarks

This event will only be triggered if the Qlik Sense entity is considered to be up to date when the change occurs. When a change event is triggered, no more change events will occur until a computing operation is performed on the entity (for instance GetLayout). The initial state of a newly opened entity is not considered to be up to date which implies that an initial computing operation needs to be performed on the entity to start the flow of Changed events.