# Codec_Role.WriteField(Writer<TBufferWriter>, uint, Type, Role)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.transactions/orleanscodegen.orleans.transactions.participantid.codec-role/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.transactions/orleanscodegen.orleans.transactions.participantid.codec-role/methods/)

```csharp
public void WriteField<TBufferWriter>(ref Writer<TBufferWriter> writer, uint fieldIdDelta, Type expectedType, Role value)
```

Writes a field.

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `fieldIdDelta` (`uint`): The field identifier delta.
- `expectedType` (`Type`): The expected type.
- `value` (`Role`): The value.