# SubscriptionAdded

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

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Streaming) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Diagnostics/StreamingEvents.cs#L122)

```csharp
public sealed class SubscriptionAdded : StreamingEvent
```

Event payload for when a stream subscription is added.

## Constructors

- [SubscriptionAdded(string, StreamId, Guid, GrainId, SiloAddress?)](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streaming.diagnostics.streamingevents.subscriptionadded/constructors/constructor-string-orleans-runtime-streamid-system-guid-orleans-runtime-grainid-2deb2abb/)

## Fields

- [ConsumerGrainId](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streaming.diagnostics.streamingevents.subscriptionadded/fields/consumergrainid-0c26577d/)
- [StreamId](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streaming.diagnostics.streamingevents.subscriptionadded/fields/streamid-d63cd635/)
- [SubscriptionId](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streaming.diagnostics.streamingevents.subscriptionadded/fields/subscriptionid-2915b0c8/)