# IStreamPubSub.RegisterConsumer(GuidId, QualifiedStreamId, GrainId, string)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreampubsub/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreampubsub/methods/)

```csharp
public abstract Task RegisterConsumer(GuidId subscriptionId, QualifiedStreamId streamId, GrainId streamConsumer, string filterData)
```

### Parameters

- `subscriptionId` (`GuidId`)
- `streamId` (`QualifiedStreamId`)
- `streamConsumer` (`GrainId`)
- `filterData` (`string`)