# IStreamIdentity

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

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Streaming) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Core/IStreamIdentity.cs#L12)

```csharp
public interface IStreamIdentity
```

Uniquely identifies a stream.

## Remarks

Use [StreamId](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.runtime.streamid/) instead, where possible.

## Properties

- [Guid](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamidentity/properties/guid-1c4a0fd9/)
- [Namespace](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamidentity/properties/namespace-98532c03/)