# IStreamNamespacePredicateProvider.TryGetPredicate(string, IStreamNamespacePredicate)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamnamespacepredicateprovider/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamnamespacepredicateprovider/methods/)

```csharp
public abstract bool TryGetPredicate(string predicatePattern, out IStreamNamespacePredicate predicate)
```

Get the predicate matching the provided pattern. Returns `false` if this provider cannot match the predicate.

### Parameters

- `predicatePattern` (`string`)
- `predicate` (`IStreamNamespacePredicate`)