# ConstructorChannelNamespacePredicateProvider.TryGetPredicate(string, IChannelNamespacePredicate)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.broadcastchannel/orleans.broadcastchannel.constructorchannelnamespacepredicateprovider/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.broadcastchannel/orleans.broadcastchannel.constructorchannelnamespacepredicateprovider/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.BroadcastChannel/SubscriberTable/Predicates/DefaultStreamNamespacePredicateProvider.cs#L59-L96)

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

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

### Parameters

- `predicatePattern` (`string`)
- `predicate` (`IChannelNamespacePredicate`)