# IGrainExtensionBinder

Package: [Microsoft.Orleans.Core.Abstractions](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Core.Abstractions)

```csharp
public interface IGrainExtensionBinder
```

Functionality for accessing or installing an extension on a grain.

## Methods

- [GetExtension](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igrainextensionbinder/methods/getextension-1-a9e793d1/)
- [GetOrSetExtension(Func<TExtension>)](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igrainextensionbinder/methods/getorsetextension-2-system-func-textension-d90f3edf/)