# LibTmux.Pane.SendPrefixAsync

- **Module:** LibTmux.Pane
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/320dc64f4b8b7815842471327a5e6b84a1499bf8/src/LibTmux/Pane.Input.cs#L112
- **Page:** https://libtmux.org/en/dotnet/latest/reference/libtmux-pane-sendprefixasync/

```
LibTmux.Pane.SendPrefixAsync(secondary: bool, cancellationToken: CancellationToken) -> Task
```

Sends the configured prefix key to the pane.

## Parameters

- `secondary` (bool): Whether the secondary prefix is sent.
- `cancellationToken` (CancellationToken): Cancels the tmux command.