# IActivationWorkingSet

Package: [Microsoft.Orleans.Runtime](/orleans/docs/api/csharp/microsoft.orleans.runtime/) 10.0.0

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

```csharp
public interface IActivationWorkingSet
```

Manages the set of recently active [IGrainContext](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igraincontext/) instances.

## Properties

- [Count](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.iactivationworkingset/properties/count-773cf7f4/)

## Methods

- [OnActivated(IActivationWorkingSetMember)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.iactivationworkingset/methods/onactivated-orleans-runtime-iactivationworkingsetmember-8ca7e1bd/)
- [OnActive(IActivationWorkingSetMember)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.iactivationworkingset/methods/onactive-orleans-runtime-iactivationworkingsetmember-934f5a4e/)
- [OnDeactivated(IActivationWorkingSetMember)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.iactivationworkingset/methods/ondeactivated-orleans-runtime-iactivationworkingsetmember-3d2f4108/)
- [OnDeactivating(IActivationWorkingSetMember)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.iactivationworkingset/methods/ondeactivating-orleans-runtime-iactivationworkingsetmember-c9fc9f5d/)