# ReadOnlyCollectionCodec<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/ReadOnlyCollectionCodec.cs#L30)

```csharp
public sealed class ReadOnlyCollectionCodec<T> : GeneralizedReferenceTypeSurrogateCodec<ReadOnlyCollection<T>, ReadOnlyCollectionSurrogate<T>>
```

Serializer for `System.Collections.ObjectModel.ReadOnlyCollection-1`.

## Type parameters

- `T`: The element type.

## Constructors

- [ReadOnlyCollectionCodec&lt;T&gt;(IValueSerializer&lt;ReadOnlyCollectionSurrogate&lt;T&gt;&gt;)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.readonlycollectioncodec-1/constructors/constructor-orleans-serialization-serializers-ivalueserializer-orleans-serializa-f3de1bfd/)

## Methods

- [ConvertFromSurrogate(ReadOnlyCollectionSurrogate&lt;T&gt;)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.readonlycollectioncodec-1/methods/convertfromsurrogate-ref-orleans-serialization-codecs-readonlycollectionsurrogat-f0863fcd/)
- [ConvertToSurrogate(ReadOnlyCollection&lt;T&gt;, ReadOnlyCollectionSurrogate&lt;T&gt;)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.readonlycollectioncodec-1/methods/converttosurrogate-system-collections-objectmodel-readonlycollection-t-ref-orlea-e2fc860b/)