# RegexImplicitStreamSubscriptionAttribute

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/Predicates/StreamSubscriptionAttributes.cs#L112)

```csharp
public sealed class RegexImplicitStreamSubscriptionAttribute : ImplicitStreamSubscriptionAttribute
```

The [Orleans.RegexImplicitStreamSubscription] attribute is used to mark grains as implicit stream subscriptions by filtering stream namespaces to subscribe using a regular expression.

## Constructors

- [RegexImplicitStreamSubscriptionAttribute(string)](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.regeximplicitstreamsubscriptionattribute/constructors/constructor-string-9533e1e2/)