# ReadOnlyMemoryOfByteCodec.WriteField(Writer<TBufferWriter>, uint, ReadOnlyMemory<byte>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.readonlymemoryofbytecodec/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.readonlymemoryofbytecodec/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/ByteArrayCodec.cs#L250)

```csharp
public static void WriteField<TBufferWriter>(ref Writer<TBufferWriter> writer, uint fieldIdDelta, ReadOnlyMemory<byte> value)
```

Writes a field without type info (expected type is statically known).

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `fieldIdDelta` (`uint`): The field identifier delta.
- `value` (`ReadOnlyMemory<byte>`): The value.