# LibTmux.Pane.SendPrefixAsync

- **Module:** LibTmux.Pane
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/6656a563ec9e07ab52e0c3ac96f7704fc94cc0c0/src/LibTmux/Pane.Input.cs#L105
- **Page:** https://libtmux.org/reference/dotnet/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.