# IGrainContext.Activate(Dictionary<string, object>, CancellationToken)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igraincontext/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igraincontext/methods/)

```csharp
public abstract void Activate(Dictionary<string, object>? requestContext, CancellationToken cancellationToken = default(CancellationToken))
```

Start activating this instance.

### Parameters

- `requestContext` (`Dictionary<string, object>`): The request context of the request which is causing this instance to be activated, if any.
- `cancellationToken` (`CancellationToken`): A cancellation token which, when canceled, indicates that the process should complete promptly.