# Writer<TBufferWriter>.AdvanceSpan(int)

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

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Buffers/Writer.cs#L227)

```csharp
public void AdvanceSpan(int length)
```

Advance the write position in the current span.

### Parameters

- `length` (`int`): The number of bytes to advance wirte position by.