# NullableCodec<T>

Package: [Microsoft.Orleans.Serialization](/orleans/docs/api/csharp/microsoft.orleans.serialization/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Serialization) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/NullableCodec.cs#L17)

```csharp
public sealed class NullableCodec<T> : IFieldCodec, IFieldCodec<T?>
    where T : struct
```

Serializer for `System.Nullable-1`.

## Type parameters

- `T`: The element type.

## Constructors

- [NullableCodec&lt;T&gt;(IFieldCodec&lt;T&gt;)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.nullablecodec-1/constructors/constructor-orleans-serialization-codecs-ifieldcodec-t-7fc564b2/)

## Methods

- [ReadValue(Reader&lt;TInput&gt;, Field)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.nullablecodec-1/methods/readvalue-1-ref-orleans-serialization-buffers-reader-tinput-orleans-serializatio-04ef0a81/)
- [WriteField(Writer&lt;TBufferWriter&gt;, uint, Type, T?)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.nullablecodec-1/methods/writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-f3755e2d/)