# ChannelId.Create(ReadOnlySpan<byte>, ReadOnlySpan<byte>)

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

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.BroadcastChannel/ChannelId.cs)

```csharp
public static ChannelId Create(ReadOnlySpan<byte> ns, ReadOnlySpan<byte> key)
```

Initializes a new instance of the [ChannelId](/orleans/docs/api/csharp/microsoft.orleans.broadcastchannel/orleans.broadcastchannel.channelid/) struct.

### Parameters

- `ns` (`ReadOnlySpan<byte>`): The namespace.
- `key` (`ReadOnlySpan<byte>`): The key.