# LibTmux.Session.LockAsync

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** C#
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux/Session.Lifecycle.cs#L118
- **Page:** https://libtmux.org/en/csharp/latest/reference/libtmux-session-lockasync/

tmux command: [`lock-session`](/en/tmux/latest/manual/lock-session/)

```
LibTmux.Session.LockAsync(cancellationToken: CancellationToken) -> Task
```

Locks this session.

## Parameters

- `cancellationToken` (`CancellationToken`): Cancels the tmux command.