## Entity.SystemId property

The system identifier associated with the entity if specified, and null otherwise. This may be an absolute URI or not.

```csharp
public string SystemId { get; }
```

### Property Value

The system identifier.

### See Also

* class [Entity](../)
* namespace [Aspose.Html.Dom](../../../aspose.html.dom/)
* assembly [Aspose.HTML](../../../)