# RegexStreamNamespacePredicate.PredicatePattern

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.regexstreamnamespacepredicate/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.regexstreamnamespacepredicate/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Predicates/RegexStreamNamespacePredicate.cs#L18)

```csharp
public string PredicatePattern
```

Returns a pattern used to describe this instance. The pattern will be parsed by an [IStreamNamespacePredicateProvider](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamnamespacepredicateprovider/) instance on each node.