# IStreamPubSub.RegisterProducer(QualifiedStreamId, GrainId)

[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<ISet<PubSubSubscriptionState>> RegisterProducer(QualifiedStreamId streamId, GrainId streamProducer)
```

### Parameters

- `streamId` (`QualifiedStreamId`)
- `streamProducer` (`GrainId`)