# Reader<TInput>.ReadBytes(Span<byte>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.buffers.reader-1/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.buffers.reader-1/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Buffers/Reader.cs#L906-L925)

```csharp
public void ReadBytes(scoped Span<byte> destination)
```

Fills `destination` with bytes read from the input.

### Parameters

- `destination` (`Span<byte>`): The destination.