# ImplicitStreamSubscriptionAttribute.ImplicitStreamSubscriptionAttribute

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.implicitstreamsubscriptionattribute/) | [Constructors](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.implicitstreamsubscriptionattribute/constructors/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Predicates/StreamSubscriptionAttributes.cs#L34-L37)

```csharp
public ImplicitStreamSubscriptionAttribute()
```

Used to subscribe to all stream namespaces.