# LibTmux.Query.QueryFieldCatalog.GetFields

- **Module:** LibTmux.Query
- **Package:** LibTmux
- **Language:** C#
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux/Query/QueryFieldCatalog.cs#L15
- **Page:** https://libtmux.org/en/csharp/latest/reference/libtmux-query-queryfieldcatalog-getfields/

```
LibTmux.Query.QueryFieldCatalog.GetFields(target: QueryTarget) -> IReadOnlyList<QueryFieldDescriptor>
```

Reads the supported fields for one portable query target.

## Parameters

- `target` (`QueryTarget`): The target whose vocabulary is requested.

## Returns

Immutable descriptors in stable wire-name order.

## Raises

- [`ArgumentOutOfRangeException`](https://learn.microsoft.com/dotnet/api/system.argumentoutofrangeexception): The target is undefined.