# Codec_ClusterMembershipUpdate.WriteField(Writer<TBufferWriter>, uint, Type, ClusterMembershipUpdate)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleanscodegen.orleans.runtime.codec-clustermembershipupdate/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleanscodegen.orleans.runtime.codec-clustermembershipupdate/methods/)

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

Writes a field.

### Parameters

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