# Reader<TInput>.Remaining

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

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.Serialization/Buffers/Reader.cs#L450-L475)

```csharp
public long Remaining
```

Gets the number of unread bytes in the input.