# RegexChannelNamespacePredicate.RegexChannelNamespacePredicate(string)

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

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.BroadcastChannel/SubscriberTable/Predicates/RegexChannelNamespacePredicate.cs#L24-L29)

```csharp
public RegexChannelNamespacePredicate(string regex)
```

Creates an instance of [RegexChannelNamespacePredicate](/orleans/docs/api/csharp/microsoft.orleans.broadcastchannel/orleans.broadcastchannel.regexchannelnamespacepredicate/) with the specified regular expression.

### Parameters

- `regex` (`string`): The stream namespace regular expression.